13120321031 has 8 divisors (see below), whose sum is σ = 13528937520. Its totient is φ = 12717669952.

The previous prime is 13120321001. The next prime is 13120321033. The reversal of 13120321031 is 13012302131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13120321031 is a prime.

It is a super-2 number, since 2×13120321031² (a number of 21 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 (13120321033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1486886 + ... + 1495683.

It is an arithmetic number, because the mean of its divisors is an integer number (1691117190).

Almost surely, 2^13120321031 is an apocalyptic number.

13120321031 is a deficient number, since it is larger than the sum of its proper divisors (408616489).

13120321031 is an equidigital number, since it uses as much as digits as its factorization.

13120321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2982705.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 13120321031 its reverse (13012302131), we get a palindrome (26132623162).

The spelling of 13120321031 in words is "thirteen billion, one hundred twenty million, three hundred twenty-one thousand, thirty-one".