312210031313 has 4 divisors (see below), whose sum is σ = 313153264368. Its totient is φ = 311266798260.

The previous prime is 312210031291. The next prime is 312210031319. The reversal of 312210031313 is 313130012213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312210031313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312210031319) 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, 471616031 + ... + 471616692.

It is an arithmetic number, because the mean of its divisors is an integer number (78288316092).

Almost surely, 2^312210031313 is an apocalyptic number.

It is an amenable number.

312210031313 is a deficient number, since it is larger than the sum of its proper divisors (943233055).

312210031313 is an equidigital number, since it uses as much as digits as its factorization.

312210031313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943233054.

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

Adding to 312210031313 its reverse (313130012213), we get a palindrome (625340043526).

The spelling of 312210031313 in words is "three hundred twelve billion, two hundred ten million, thirty-one thousand, three hundred thirteen".