12508431 has 16 divisors (see below), whose sum is σ = 18232704. Its totient is φ = 7581024.

The previous prime is 12508421. The next prime is 12508453. The reversal of 12508431 is 13480521.

It is not a de Polignac number, because 12508431 - 2¹¹ = 12506383 is a prime.

It is a super-4 number, since 4×12508431⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12508421) 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, 220 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (1139544).

Almost surely, 2^12508431 is an apocalyptic number.

12508431 is a deficient number, since it is larger than the sum of its proper divisors (5724273).

12508431 is a wasteful number, since it uses less digits than its factorization.

12508431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 12508431 is about 3536.7260284054. The cubic root of 12508431 is about 232.1316076014.

Adding to 12508431 its reverse (13480521), we get a palindrome (25988952).

The spelling of 12508431 in words is "twelve million, five hundred eight thousand, four hundred thirty-one".