31213301313113 has 4 divisors (see below), whose sum is σ = 31742340318480. Its totient is φ = 30684262307748.

The previous prime is 31213301313083. The next prime is 31213301313119. The reversal of 31213301313113 is 31131310331213.

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 31213301313113 - 2¹⁴ = 31213301296729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213301313119) 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, 264519502595 + ... + 264519502712.

It is an arithmetic number, because the mean of its divisors is an integer number (7935585079620).

Almost surely, 2^{31213301313113} is an apocalyptic number.

It is an amenable number.

31213301313113 is a deficient number, since it is larger than the sum of its proper divisors (529039005367).

31213301313113 is an equidigital number, since it uses as much as digits as its factorization.

31213301313113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529039005366.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 31213301313113 its reverse (31131310331213), we get a palindrome (62344611644326).

The spelling of 31213301313113 in words is "thirty-one trillion, two hundred thirteen billion, three hundred one million, three hundred thirteen thousand, one hundred thirteen".