12531808 has 12 divisors (see below), whose sum is σ = 24672060. Its totient is φ = 6265888.

The previous prime is 12531787. The next prime is 12531809. The reversal of 12531808 is 80813521.

12531808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195778 + ... + 195841.

It is an arithmetic number, because the mean of its divisors is an integer number (2056005).

Almost surely, 2^12531808 is an apocalyptic number.

It is an amenable number.

12531808 is a deficient number, since it is larger than the sum of its proper divisors (12140252).

12531808 is an equidigital number, since it uses as much as digits as its factorization.

12531808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391629 (or 391621 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 12531808 is about 3540.0293784092. The cubic root of 12531808 is about 232.2761278199.

The spelling of 12531808 in words is "twelve million, five hundred thirty-one thousand, eight hundred eight".