13408631 has 8 divisors (see below), whose sum is σ = 14230080. Its totient is φ = 12590848.

The previous prime is 13408627. The next prime is 13408639. The reversal of 13408631 is 13680431.

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 13408631 - 2² = 13408627 is a prime.

It is a super-2 number, since 2×13408631² = 359582770588322, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 13408631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13408639) 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, 11675 + ... + 12771.

It is an arithmetic number, because the mean of its divisors is an integer number (1778760).

Almost surely, 2^13408631 is an apocalyptic number.

13408631 is a deficient number, since it is larger than the sum of its proper divisors (821449).

13408631 is a wasteful number, since it uses less digits than its factorization.

13408631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 13408631 is about 3661.7797585327. The cubic root of 13408631 is about 237.5717589258.

The spelling of 13408631 in words is "thirteen million, four hundred eight thousand, six hundred thirty-one".