13938631 has 8 divisors (see below), whose sum is σ = 16056320. Its totient is φ = 11852568.

The previous prime is 13938581. The next prime is 13938671. The reversal of 13938631 is 13683931.

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

It is not a de Polignac number, because 13938631 - 2¹⁵ = 13905863 is a prime.

It is a super-2 number, since 2×13938631² = 388570868308322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13938671) 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, 6951 + ... + 8728.

It is an arithmetic number, because the mean of its divisors is an integer number (2007040).

Almost surely, 2^13938631 is an apocalyptic number.

13938631 is a deficient number, since it is larger than the sum of its proper divisors (2117689).

13938631 is a wasteful number, since it uses less digits than its factorization.

13938631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15813.

The product of its digits is 11664, while the sum is 34.

The square root of 13938631 is about 3733.4476024179. The cubic root of 13938631 is about 240.6615486396.

The spelling of 13938631 in words is "thirteen million, nine hundred thirty-eight thousand, six hundred thirty-one".