13120431313 has 4 divisors (see below), whose sum is σ = 14313197808. Its totient is φ = 11927664820.

The previous prime is 13120431307. The next prime is 13120431347. The reversal of 13120431313 is 31313402131.

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 13120431313 - 2³³ = 4530496721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120432313) 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, 596383231 + ... + 596383252.

It is an arithmetic number, because the mean of its divisors is an integer number (3578299452).

Almost surely, 2^13120431313 is an apocalyptic number.

It is an amenable number.

13120431313 is a deficient number, since it is larger than the sum of its proper divisors (1192766495).

13120431313 is a wasteful number, since it uses less digits than its factorization.

13120431313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192766494.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13120431313 its reverse (31313402131), we get a palindrome (44433833444).

The spelling of 13120431313 in words is "thirteen billion, one hundred twenty million, four hundred thirty-one thousand, three hundred thirteen".