13120131321 has 12 divisors (see below), whose sum is σ = 20674146480. Its totient is φ = 7951594680.

The previous prime is 13120131307. The next prime is 13120131331. The reversal of 13120131321 is 12313102131.

13120131321 is a `hidden beast` number, since 1 + 312 + 0 + 1 + 31 + 321 = 666.

It is not a de Polignac number, because 13120131321 - 2⁹ = 13120130809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13120131294 and 13120131303.

It is not an unprimeable number, because it can be changed into a prime (13120131301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66263191 + ... + 66263388.

It is an arithmetic number, because the mean of its divisors is an integer number (1722845540).

Almost surely, 2^13120131321 is an apocalyptic number.

13120131321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13120131321 is a deficient number, since it is larger than the sum of its proper divisors (7554015159).

13120131321 is a wasteful number, since it uses less digits than its factorization.

13120131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132526596 (or 132526593 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13120131321 its reverse (12313102131), we get a palindrome (25433233452).

It can be divided in two parts, 13120 and 131321, that added together give a palindrome (144441).

The spelling of 13120131321 in words is "thirteen billion, one hundred twenty million, one hundred thirty-one thousand, three hundred twenty-one".