13931232 has 48 divisors (see below), whose sum is σ = 41795712. Its totient is φ = 3980160.

The previous prime is 13931221. The next prime is 13931287. The reversal of 13931232 is 23213931.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9694 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (870744).

Almost surely, 2^13931232 is an apocalyptic number.

13931232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13931232 is an abundant number, since it is smaller than the sum of its proper divisors (27864480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13931232 is a wasteful number, since it uses less digits than its factorization.

13931232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20751 (or 20743 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

The square root of 13931232 is about 3732.4565637124. The cubic root of 13931232 is about 240.6189578963.

The spelling of 13931232 in words is "thirteen million, nine hundred thirty-one thousand, two hundred thirty-two".