12312004 has 6 divisors (see below), whose sum is σ = 21546014. Its totient is φ = 6156000.

The previous prime is 12311989. The next prime is 12312011. The reversal of 12312004 is 40021321.

It can be written as a sum of positive squares in only one way, i.e., 9622404 + 2689600 = 3102^2 + 1640^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1538997 + ... + 1539004.

Almost surely, 2^12312004 is an apocalyptic number.

It is an amenable number.

12312004 is a deficient number, since it is larger than the sum of its proper divisors (9234010).

12312004 is a wasteful number, since it uses less digits than its factorization.

12312004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078005 (or 3078003 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12312004 is about 3508.8465341192. The cubic root of 12312004 is about 230.9100928831.

Adding to 12312004 its reverse (40021321), we get a palindrome (52333325).

The spelling of 12312004 in words is "twelve million, three hundred twelve thousand, four".