13099631 has 8 divisors (see below), whose sum is σ = 13344864. Its totient is φ = 12856320.

The previous prime is 13099621. The next prime is 13099651. The reversal of 13099631 is 13699031.

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

It is a cyclic number.

It is not a de Polignac number, because 13099631 - 2²² = 8905327 is a prime.

It is a super-2 number, since 2×13099631² = 343200664672322, which 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 (13099601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22415 + ... + 22991.

It is an arithmetic number, because the mean of its divisors is an integer number (1668108).

Almost surely, 2^13099631 is an apocalyptic number.

13099631 is a deficient number, since it is larger than the sum of its proper divisors (245233).

13099631 is an equidigital number, since it uses as much as digits as its factorization.

13099631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13099631 is about 3619.3412384024. The cubic root of 13099631 is about 235.7326223524.

The spelling of 13099631 in words is "thirteen million, ninety-nine thousand, six hundred thirty-one".