312012300031 has 4 divisors (see below), whose sum is σ = 312266176200. Its totient is φ = 311758423864.

The previous prime is 312012300011. The next prime is 312012300077. The reversal of 312012300031 is 130003210213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130003210213 = 33107 ⋅3926759.

It is a cyclic number.

It is not a de Polignac number, because 312012300031 - 2²⁵ = 311978745599 is a prime.

It is a super-2 number, since 2×312012300031² (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 = 312012299978 and 312012300014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312012300011) 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, 126936241 + ... + 126938698.

It is an arithmetic number, because the mean of its divisors is an integer number (78066544050).

Almost surely, 2^312012300031 is an apocalyptic number.

312012300031 is a deficient number, since it is larger than the sum of its proper divisors (253876169).

312012300031 is a wasteful number, since it uses less digits than its factorization.

312012300031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253876168.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 312012300031 its reverse (130003210213), we get a palindrome (442015510244).

The spelling of 312012300031 in words is "three hundred twelve billion, twelve million, three hundred thousand, thirty-one".