13933631 has 8 divisors (see below), whose sum is σ = 14707200. Its totient is φ = 13164120.

The previous prime is 13933627. The next prime is 13933637. The reversal of 13933631 is 13633931.

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 13933631 - 2² = 13933627 is a prime.

It is a super-2 number, since 2×13933631² = 388292145688322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13933594 and 13933603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13933637) 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, 8336 + ... + 9866.

It is an arithmetic number, because the mean of its divisors is an integer number (1838400).

Almost surely, 2^13933631 is an apocalyptic number.

13933631 is a deficient number, since it is larger than the sum of its proper divisors (773569).

13933631 is a wasteful number, since it uses less digits than its factorization.

13933631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029.

The product of its digits is 4374, while the sum is 29.

The square root of 13933631 is about 3732.7779199947. Note that the first 3 decimals coincide. The cubic root of 13933631 is about 240.6327688727.

The spelling of 13933631 in words is "thirteen million, nine hundred thirty-three thousand, six hundred thirty-one".