13320369531 has 24 divisors (see below), whose sum is σ = 22404077280. Its totient is φ = 7468022016.

The previous prime is 13320369527. The next prime is 13320369541. The reversal of 13320369531 is 13596302331.

It is not a de Polignac number, because 13320369531 - 2² = 13320369527 is a prime.

It is a super-2 number, since 2×13320369531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13320369511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1991326 + ... + 1998003.

It is an arithmetic number, because the mean of its divisors is an integer number (933503220).

Almost surely, 2^13320369531 is an apocalyptic number.

13320369531 is a deficient number, since it is larger than the sum of its proper divisors (9083707749).

13320369531 is a wasteful number, since it uses less digits than its factorization.

13320369531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989395 (or 3989392 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 36.

The spelling of 13320369531 in words is "thirteen billion, three hundred twenty million, three hundred sixty-nine thousand, five hundred thirty-one".