13931516 has 12 divisors (see below), whose sum is σ = 24459288. Its totient is φ = 6943152.

The previous prime is 13931509. The next prime is 13931521. The reversal of 13931516 is 61513931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (2038274).

Almost surely, 2^13931516 is an apocalyptic number.

It is an amenable number.

13931516 is a deficient number, since it is larger than the sum of its proper divisors (10527772).

13931516 is a wasteful number, since it uses less digits than its factorization.

13931516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11308 (or 11306 counting only the distinct ones).

The product of its digits is 2430, while the sum is 29.

The square root of 13931516 is about 3732.4946081676. The cubic root of 13931516 is about 240.6205929591.

The spelling of 13931516 in words is "thirteen million, nine hundred thirty-one thousand, five hundred sixteen".