312311313210031 has 4 divisors (see below), whose sum is σ = 312333893754064. Its totient is φ = 312288732666000.

The previous prime is 312311313210007. The next prime is 312311313210041. The reversal of 312311313210031 is 130012313113213.

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

It is a cyclic number.

It is not a de Polignac number, because 312311313210031 - 2²³ = 312311304821423 is a prime.

It is a super-2 number, since 2×312311313210031² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312311313209978 and 312311313210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312311313210041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11290251270 + ... + 11290278931.

It is an arithmetic number, because the mean of its divisors is an integer number (78083473438516).

Almost surely, 2^{312311313210031} is an apocalyptic number.

312311313210031 is a deficient number, since it is larger than the sum of its proper divisors (22580544033).

312311313210031 is a wasteful number, since it uses less digits than its factorization.

312311313210031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22580544032.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 312311313210031 its reverse (130012313113213), we get a palindrome (442323626323244).

The spelling of 312311313210031 in words is "three hundred twelve trillion, three hundred eleven billion, three hundred thirteen million, two hundred ten thousand, thirty-one".