312130031213 has 40 divisors (see below), whose sum is σ = 427789604256. Its totient is φ = 224508866400.

The previous prime is 312130031209. The next prime is 312130031219.

312130031213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 312130031213 - 2² = 312130031209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312130031219) 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 39 ways as a sum of consecutive naturals, for example, 111203 + ... + 797888.

Almost surely, 2^312130031213 is an apocalyptic number.

It is an amenable number.

312130031213 is a deficient number, since it is larger than the sum of its proper divisors (115659573043).

312130031213 is an equidigital number, since it uses as much as digits as its factorization.

312130031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909143 (or 909122 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

It can be divided in two parts, 3121300 and 31213, that multiplied together give a square (97425136900 = 312130²).

The spelling of 312130031213 in words is "three hundred twelve billion, one hundred thirty million, thirty-one thousand, two hundred thirteen".