13120311031013 has 4 divisors (see below), whose sum is σ = 13367864069388. Its totient is φ = 12872757992640.

The previous prime is 13120311030949. The next prime is 13120311031067. The reversal of 13120311031013 is 31013011302131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7099363078369 + 6020947952644 = 2664463^2 + 2453762^2 .

It is a cyclic number.

It is not a de Polignac number, because 13120311031013 - 2⁶ = 13120311030949 is a prime.

It is a super-2 number, since 2×13120311031013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120311031313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123776519108 + ... + 123776519213.

It is an arithmetic number, because the mean of its divisors is an integer number (3341966017347).

Almost surely, 2^{13120311031013} is an apocalyptic number.

It is an amenable number.

13120311031013 is a deficient number, since it is larger than the sum of its proper divisors (247553038375).

13120311031013 is an equidigital number, since it uses as much as digits as its factorization.

13120311031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247553038374.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 13120311031013 its reverse (31013011302131), we get a palindrome (44133322333144).

The spelling of 13120311031013 in words is "thirteen trillion, one hundred twenty billion, three hundred eleven million, thirty-one thousand, thirteen".