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1331215300 = 225213797169
BaseRepresentation
bin100111101011000…
…1011101111000100
310102202220202002101
41033112023233010
510211242342200
6340032321444
744663100112
oct11726135704
93382822071
101331215300
11623488838
123119a3284
13182a4717c
14c8b28ab2
157bd0926a
hex4f58bbc4

1331215300 has 36 divisors (see below), whose sum is σ = 2909852820. Its totient is φ = 528593920.

The previous prime is 1331215279. The next prime is 1331215307. The reversal of 1331215300 is 35121331.

It can be written as a sum of positive squares in 6 ways, for example, as 33918976 + 1297296324 = 5824^2 + 36018^2 .

It is not an unprimeable number, because it can be changed into a prime (1331215307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34885 + ... + 62284.

It is an arithmetic number, because the mean of its divisors is an integer number (80829245).

Almost surely, 21331215300 is an apocalyptic number.

1331215300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331215300 is an abundant number, since it is smaller than the sum of its proper divisors (1578637520).

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

1331215300 is a wasteful number, since it uses less digits than its factorization.

1331215300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97320 (or 97313 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1331215300 is about 36485.8232742527. The cubic root of 1331215300 is about 1100.0593080970.

Adding to 1331215300 its reverse (35121331), we get a palindrome (1366336631).

The spelling of 1331215300 in words is "one billion, three hundred thirty-one million, two hundred fifteen thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 137 274 548 685 1370 2740 3425 6850 13700 97169 194338 388676 485845 971690 1943380 2429225 4858450 9716900 13312153 26624306 53248612 66560765 133121530 266243060 332803825 665607650 1331215300