312153304521 has 32 divisors (see below), whose sum is σ = 429287040000. Its totient is φ = 201694313664.

The previous prime is 312153304517. The next prime is 312153304549. The reversal of 312153304521 is 125403351213.

It is not a de Polignac number, because 312153304521 - 2² = 312153304517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312153304721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2687355 + ... + 2801103.

It is an arithmetic number, because the mean of its divisors is an integer number (13415220000).

Almost surely, 2^312153304521 is an apocalyptic number.

It is an amenable number.

312153304521 is a deficient number, since it is larger than the sum of its proper divisors (117133735479).

312153304521 is a wasteful number, since it uses less digits than its factorization.

312153304521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114045.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 312153304521 its reverse (125403351213), we get a palindrome (437556655734).

The spelling of 312153304521 in words is "three hundred twelve billion, one hundred fifty-three million, three hundred four thousand, five hundred twenty-one".