13231908 has 36 divisors (see below), whose sum is σ = 33633600. Its totient is φ = 4386096.

The previous prime is 13231901. The next prime is 13231913. The reversal of 13231908 is 80913231.

13231908 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6241 + ... + 8087.

Almost surely, 2^13231908 is an apocalyptic number.

13231908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13231908 is an abundant number, since it is smaller than the sum of its proper divisors (20401692).

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

13231908 is a wasteful number, since it uses less digits than its factorization.

13231908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13231908 is about 3637.5689684183. The cubic root of 13231908 is about 236.5234240871.

The spelling of 13231908 in words is "thirteen million, two hundred thirty-one thousand, nine hundred eight".