312631291933 has 4 divisors (see below), whose sum is σ = 323411681340. Its totient is φ = 301850902528.

The previous prime is 312631291909. The next prime is 312631291979. The reversal of 312631291933 is 339192136213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190552329529 + 122078962404 = 436523^2 + 349398^2 .

It is a cyclic number.

It is not a de Polignac number, because 312631291933 - 2¹⁷ = 312631160861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312631291933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312631291993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5390194660 + ... + 5390194717.

It is an arithmetic number, because the mean of its divisors is an integer number (80852920335).

Almost surely, 2^312631291933 is an apocalyptic number.

It is an amenable number.

312631291933 is a deficient number, since it is larger than the sum of its proper divisors (10780389407).

312631291933 is a wasteful number, since it uses less digits than its factorization.

312631291933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10780389406.

The product of its digits is 157464, while the sum is 43.

The spelling of 312631291933 in words is "three hundred twelve billion, six hundred thirty-one million, two hundred ninety-one thousand, nine hundred thirty-three".