12531004 has 6 divisors (see below), whose sum is σ = 21929264. Its totient is φ = 6265500.

The previous prime is 12530993. The next prime is 12531007. The reversal of 12531004 is 40013521.

It is a super-2 number, since 2×12531004² = 314052122496032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1566372 + ... + 1566379.

Almost surely, 2^12531004 is an apocalyptic number.

It is an amenable number.

12531004 is a deficient number, since it is larger than the sum of its proper divisors (9398260).

12531004 is a wasteful number, since it uses less digits than its factorization.

12531004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132755 (or 3132753 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12531004 is about 3539.9158182081. The cubic root of 12531004 is about 232.2711603536.

Adding to 12531004 its reverse (40013521), we get a palindrome (52544525).

The spelling of 12531004 in words is "twelve million, five hundred thirty-one thousand, four".