12331931 has 8 divisors (see below), whose sum is σ = 13429200. Its totient is φ = 11279520.

The previous prime is 12331909. The next prime is 12331951. The reversal of 12331931 is 13913321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12331931 - 2¹⁰ = 12330907 is a prime.

It is a super-2 number, since 2×12331931² = 304153044377522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12331897 and 12331906.

It is not an unprimeable number, because it can be changed into a prime (12331951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10640 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (1678650).

It is a self-describing number.

Almost surely, 2^12331931 is an apocalyptic number.

12331931 is a deficient number, since it is larger than the sum of its proper divisors (1097269).

12331931 is a wasteful number, since it uses less digits than its factorization.

12331931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22429.

The product of its digits is 486, while the sum is 23.

The square root of 12331931 is about 3511.6849232242. The cubic root of 12331931 is about 231.0346018643.

The spelling of 12331931 in words is "twelve million, three hundred thirty-one thousand, nine hundred thirty-one".