31212300313 has 4 divisors (see below), whose sum is σ = 31588352208. Its totient is φ = 30836248420.

The previous prime is 31212300299. The next prime is 31212300337. The reversal of 31212300313 is 31300321213.

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 not a de Polignac number, because 31212300313 - 2⁵ = 31212300281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212300113) 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, 188025823 + ... + 188025988.

It is an arithmetic number, because the mean of its divisors is an integer number (7897088052).

Almost surely, 2^31212300313 is an apocalyptic number.

It is an amenable number.

31212300313 is a deficient number, since it is larger than the sum of its proper divisors (376051895).

31212300313 is an equidigital number, since it uses as much as digits as its factorization.

31212300313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376051894.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31212300313 its reverse (31300321213), we get a palindrome (62512621526).

The spelling of 31212300313 in words is "thirty-one billion, two hundred twelve million, three hundred thousand, three hundred thirteen".