312064881 has 4 divisors (see below), whose sum is σ = 416086512. Its totient is φ = 208043252.

The previous prime is 312064877. The next prime is 312064939. The reversal of 312064881 is 188460213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 312064881 - 2² = 312064877 is a prime.

It is a super-2 number, since 2×312064881² = 194768979907088322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312064861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52010811 + ... + 52010816.

It is an arithmetic number, because the mean of its divisors is an integer number (104021628).

Almost surely, 2^312064881 is an apocalyptic number.

It is an amenable number.

312064881 is a deficient number, since it is larger than the sum of its proper divisors (104021631).

312064881 is a wasteful number, since it uses less digits than its factorization.

312064881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104021630.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 312064881 is about 17665.3582188418. The cubic root of 312064881 is about 678.2892992737.

The spelling of 312064881 in words is "three hundred twelve million, sixty-four thousand, eight hundred eighty-one".