312153304520 has 64 divisors (see below), whose sum is σ = 705035484720. Its totient is φ = 124383366144.

The previous prime is 312153304517. The next prime is 312153304549. The reversal of 312153304520 is 25403351213.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 310144292836 + 2009011684 = 556906^2 + 44822^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41215454 + ... + 41223026.

Almost surely, 2^312153304520 is an apocalyptic number.

It is an amenable number.

312153304520 is an abundant number, since it is smaller than the sum of its proper divisors (392882180200).

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

312153304520 is a wasteful number, since it uses less digits than its factorization.

312153304520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11394 (or 11390 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 312153304520 its reverse (25403351213), we get a palindrome (337556655733).

The spelling of 312153304520 in words is "three hundred twelve billion, one hundred fifty-three million, three hundred four thousand, five hundred twenty".