12312152 has 16 divisors (see below), whose sum is σ = 24300600. Its totient is φ = 5832000.

The previous prime is 12312149. The next prime is 12312173. The reversal of 12312152 is 25121321.

It is a happy number.

It is a super-2 number, since 2×12312152² = 303178173742208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12312152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40349 + ... + 40652.

Almost surely, 2^12312152 is an apocalyptic number.

It is an amenable number.

12312152 is a deficient number, since it is larger than the sum of its proper divisors (11988448).

12312152 is a wasteful number, since it uses less digits than its factorization.

12312152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81026 (or 81022 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 12312152 is about 3508.8676236074. The cubic root of 12312152 is about 230.9110181199.

Adding to 12312152 its reverse (25121321), we get a palindrome (37433473).

It can be divided in two parts, 12312 and 152, that multiplied together give a square (1871424 = 1368²).

The spelling of 12312152 in words is "twelve million, three hundred twelve thousand, one hundred fifty-two".