312264331045521 has 4 divisors (see below), whose sum is σ = 416352441394032. Its totient is φ = 208176220697012.

The previous prime is 312264331045501. The next prime is 312264331045609. The reversal of 312264331045521 is 125540133462213.

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 312264331045521 - 2¹¹ = 312264331043473 is a prime.

It is a super-2 number, since 2×312264331045521² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312264331045501) 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, 52044055174251 + ... + 52044055174256.

It is an arithmetic number, because the mean of its divisors is an integer number (104088110348508).

Almost surely, 2^{312264331045521} is an apocalyptic number.

It is an amenable number.

312264331045521 is a deficient number, since it is larger than the sum of its proper divisors (104088110348511).

312264331045521 is a wasteful number, since it uses less digits than its factorization.

312264331045521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104088110348510.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 312264331045521 in words is "three hundred twelve trillion, two hundred sixty-four billion, three hundred thirty-one million, forty-five thousand, five hundred twenty-one".