12617312 has 12 divisors (see below), whose sum is σ = 24840396. Its totient is φ = 6308640.

The previous prime is 12617309. The next prime is 12617321. The reversal of 12617312 is 21371621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197114 + ... + 197177.

It is an arithmetic number, because the mean of its divisors is an integer number (2070033).

Almost surely, 2^12617312 is an apocalyptic number.

It is an amenable number.

12617312 is a deficient number, since it is larger than the sum of its proper divisors (12223084).

12617312 is an equidigital number, since it uses as much as digits as its factorization.

12617312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394301 (or 394293 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 12617312 is about 3552.0855845545. The cubic root of 12617312 is about 232.8032009889.

Adding to 12617312 its reverse (21371621), we get a palindrome (33988933).

The spelling of 12617312 in words is "twelve million, six hundred seventeen thousand, three hundred twelve".