12931534 has 32 divisors (see below), whose sum is σ = 24406272. Its totient is φ = 4992000.

The previous prime is 12931493. The next prime is 12931549. The reversal of 12931534 is 43513921.

12931534 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19854 + ... + 20494.

It is an arithmetic number, because the mean of its divisors is an integer number (762696).

Almost surely, 2^12931534 is an apocalyptic number.

12931534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12931534 is a deficient number, since it is larger than the sum of its proper divisors (11474738).

12931534 is a wasteful number, since it uses less digits than its factorization.

12931534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its digits is 3240, while the sum is 28.

The square root of 12931534 is about 3596.0442155235. The cubic root of 12931534 is about 234.7199561349.

The spelling of 12931534 in words is "twelve million, nine hundred thirty-one thousand, five hundred thirty-four".