312545456321 has 16 divisors (see below), whose sum is σ = 380753971200. Its totient is φ = 250583690448.

The previous prime is 312545456317. The next prime is 312545456329. The reversal of 312545456321 is 123654545213.

It is not a de Polignac number, because 312545456321 - 2² = 312545456317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312545456329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14862695 + ... + 14883708.

It is an arithmetic number, because the mean of its divisors is an integer number (23797123200).

Almost surely, 2^312545456321 is an apocalyptic number.

It is an amenable number.

312545456321 is a deficient number, since it is larger than the sum of its proper divisors (68208514879).

312545456321 is a wasteful number, since it uses less digits than its factorization.

312545456321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29746508.

The product of its digits is 432000, while the sum is 41.

The spelling of 312545456321 in words is "three hundred twelve billion, five hundred forty-five million, four hundred fifty-six thousand, three hundred twenty-one".