312312023031 has 4 divisors (see below), whose sum is σ = 416416030712. Its totient is φ = 208208015352.

The previous prime is 312312023027. The next prime is 312312023033. The reversal of 312312023031 is 130320213213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130320213213 = 3 ⋅43440071071.

It is not a de Polignac number, because 312312023031 - 2² = 312312023027 is a prime.

It is a super-2 number, since 2×312312023031² (a number of 24 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 = 312312022989 and 312312023007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312312023033) 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, 52052003836 + ... + 52052003841.

It is an arithmetic number, because the mean of its divisors is an integer number (104104007678).

Almost surely, 2^312312023031 is an apocalyptic number.

312312023031 is a deficient number, since it is larger than the sum of its proper divisors (104104007681).

312312023031 is a wasteful number, since it uses less digits than its factorization.

312312023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104104007680.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312312023031 its reverse (130320213213), we get a palindrome (442632236244).

The spelling of 312312023031 in words is "three hundred twelve billion, three hundred twelve million, twenty-three thousand, thirty-one".