12631539 has 16 divisors (see below), whose sum is σ = 17639424. Its totient is φ = 8030400.

The previous prime is 12631529. The next prime is 12631573. The reversal of 12631539 is 93513621.

It is not a de Polignac number, because 12631539 - 2¹⁵ = 12598771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12631519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5647 + ... + 7559.

It is an arithmetic number, because the mean of its divisors is an integer number (1102464).

Almost surely, 2^12631539 is an apocalyptic number.

12631539 is a deficient number, since it is larger than the sum of its proper divisors (5007885).

12631539 is a wasteful number, since it uses less digits than its factorization.

12631539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018.

The product of its digits is 4860, while the sum is 30.

The square root of 12631539 is about 3554.0876466401. The cubic root of 12631539 is about 232.8906693561.

The spelling of 12631539 in words is "twelve million, six hundred thirty-one thousand, five hundred thirty-nine".