12531393 has 48 divisors (see below), whose sum is σ = 22588800. Its totient is φ = 6549984.

The previous prime is 12531391. The next prime is 12531437. The reversal of 12531393 is 39313521.

It is a happy number.

It is not a de Polignac number, because 12531393 - 2¹ = 12531391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12531391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 432103 + ... + 432131.

It is an arithmetic number, because the mean of its divisors is an integer number (470600).

Almost surely, 2^12531393 is an apocalyptic number.

It is an amenable number.

12531393 is a deficient number, since it is larger than the sum of its proper divisors (10057407).

12531393 is an equidigital number, since it uses as much as digits as its factorization.

12531393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 58 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 12531393 is about 3539.9707625911. The cubic root of 12531393 is about 232.2735637935.

The spelling of 12531393 in words is "twelve million, five hundred thirty-one thousand, three hundred ninety-three".