13504631 has 8 divisors (see below), whose sum is σ = 15593760. Its totient is φ = 11455488.

The previous prime is 13504597. The next prime is 13504643. The reversal of 13504631 is 13640531.

It is a happy number.

13504631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-13504631 is a prime.

It is a super-2 number, since 2×13504631² = 364750116892322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13504597 and 13504606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13504661) 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, 9266 + ... + 10623.

It is an arithmetic number, because the mean of its divisors is an integer number (1949220).

Almost surely, 2^13504631 is an apocalyptic number.

13504631 is a deficient number, since it is larger than the sum of its proper divisors (2089129).

13504631 is an equidigital number, since it uses as much as digits as its factorization.

13504631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19993.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 13504631 is about 3674.8647594163. The cubic root of 13504631 is about 238.1373815502.

The spelling of 13504631 in words is "thirteen million, five hundred four thousand, six hundred thirty-one".