12331397 has 16 divisors (see below), whose sum is σ = 14095872. Its totient is φ = 10704960.

The previous prime is 12331391. The next prime is 12331441. The reversal of 12331397 is 79313321.

It is a cyclic number.

It is not a de Polignac number, because 12331397 - 2⁸ = 12331141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14498 + ... + 15324.

It is an arithmetic number, because the mean of its divisors is an integer number (880992).

Almost surely, 2^12331397 is an apocalyptic number.

It is an amenable number.

12331397 is a deficient number, since it is larger than the sum of its proper divisors (1764475).

12331397 is a wasteful number, since it uses less digits than its factorization.

12331397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its digits is 3402, while the sum is 29.

The square root of 12331397 is about 3511.6088905230. The cubic root of 12331397 is about 231.0312670457.

The spelling of 12331397 in words is "twelve million, three hundred thirty-one thousand, three hundred ninety-seven".