312112270531 has 4 divisors (see below), whose sum is σ = 312169241200. Its totient is φ = 312055299864.

The previous prime is 312112270511. The next prime is 312112270549. The reversal of 312112270531 is 135072211213.

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 312112270531 - 2¹⁷ = 312112139459 is a prime.

It is a super-2 number, since 2×312112270531² (a number of 24 digits) contains 22 as substring.

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 312112270531.

It is not an unprimeable number, because it can be changed into a prime (312112270501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28477116 + ... + 28488073.

It is an arithmetic number, because the mean of its divisors is an integer number (78042310300).

Almost surely, 2^312112270531 is an apocalyptic number.

312112270531 is a deficient number, since it is larger than the sum of its proper divisors (56970669).

312112270531 is an equidigital number, since it uses as much as digits as its factorization.

312112270531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56970668.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 312112270531 its reverse (135072211213), we get a palindrome (447184481744).

The spelling of 312112270531 in words is "three hundred twelve billion, one hundred twelve million, two hundred seventy thousand, five hundred thirty-one".