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313004220 = 22355398429
BaseRepresentation
bin10010101010000…
…001000010111100
3210210222021001220
4102222001002330
51120112113340
651020433340
710520330514
oct2252010274
9723867056
10313004220
11150756781
12889a8850
134cb01bc9
142d7da844
151c72bed0
hex12a810bc

313004220 has 48 divisors (see below), whose sum is σ = 892956960. Its totient is φ = 81892096.

The previous prime is 313004213. The next prime is 313004239. The reversal of 313004220 is 22400313.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 313004220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46035 + ... + 52394.

It is an arithmetic number, because the mean of its divisors is an integer number (18603270).

Almost surely, 2313004220 is an apocalyptic number.

313004220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

313004220 is an abundant number, since it is smaller than the sum of its proper divisors (579952740).

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

313004220 is a wasteful number, since it uses less digits than its factorization.

313004220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98494 (or 98492 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 313004220 is about 17691.9252768035. The cubic root of 313004220 is about 678.9691850007.

Adding to 313004220 its reverse (22400313), we get a palindrome (335404533).

The spelling of 313004220 in words is "three hundred thirteen million, four thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 53 60 106 159 212 265 318 530 636 795 1060 1590 3180 98429 196858 295287 393716 492145 590574 984290 1181148 1476435 1968580 2952870 5216737 5905740 10433474 15650211 20866948 26083685 31300422 52167370 62600844 78251055 104334740 156502110 313004220