12315156 has 24 divisors (see below), whose sum is σ = 32840640. Its totient is φ = 3518592.

The previous prime is 12315131. The next prime is 12315161. The reversal of 12315156 is 65151321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73221 + ... + 73388.

It is an arithmetic number, because the mean of its divisors is an integer number (1368360).

Almost surely, 2^12315156 is an apocalyptic number.

It is an amenable number.

12315156 is an abundant number, since it is smaller than the sum of its proper divisors (20525484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12315156 is a wasteful number, since it uses less digits than its factorization.

12315156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146623 (or 146621 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 12315156 is about 3509.2956558261. The cubic root of 12315156 is about 230.9297963235.

Adding to 12315156 its reverse (65151321), we get a palindrome (77466477).

The spelling of 12315156 in words is "twelve million, three hundred fifteen thousand, one hundred fifty-six".