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831310080 = 2835375851
BaseRepresentation
bin110001100011001…
…100100100000000
32010221020221001020
4301203030210000
53200303410310
6214253505440
726413006356
oct6143144400
92127227036
10831310080
11397286627
121b24a2280
131032c6273
147c5997d6
154ceae170
hex318cc900

831310080 has 144 divisors (see below), whose sum is σ = 2727219264. Its totient is φ = 215654400.

The previous prime is 831310061. The next prime is 831310111. The reversal of 831310080 is 80013138.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 831310080.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139155 + ... + 145005.

Almost surely, 2831310080 is an apocalyptic number.

831310080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 831310080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363609632).

831310080 is an abundant number, since it is smaller than the sum of its proper divisors (1895909184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

831310080 is a wasteful number, since it uses less digits than its factorization.

831310080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912 (or 5898 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 831310080 is about 28832.4483871904. The cubic root of 831310080 is about 940.2738299863.

The spelling of 831310080 in words is "eight hundred thirty-one million, three hundred ten thousand, eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 37 40 48 60 64 74 80 96 111 120 128 148 160 185 192 222 240 256 296 320 370 384 444 480 555 592 640 740 768 888 960 1110 1184 1280 1480 1776 1920 2220 2368 2960 3552 3840 4440 4736 5851 5920 7104 8880 9472 11702 11840 14208 17553 17760 23404 23680 28416 29255 35106 35520 46808 47360 58510 70212 71040 87765 93616 117020 140424 142080 175530 187232 216487 234040 280848 351060 374464 432974 468080 561696 649461 702120 748928 865948 936160 1082435 1123392 1298922 1404240 1497856 1731896 1872320 2164870 2246784 2597844 2808480 3247305 3463792 3744640 4329740 4493568 5195688 5616960 6494610 6927584 7489280 8659480 10391376 11233920 12989220 13855168 17318960 20782752 22467840 25978440 27710336 34637920 41565504 51956880 55420672 69275840 83131008 103913760 138551680 166262016 207827520 277103360 415655040 831310080