12159931 has 8 divisors (see below), whose sum is σ = 14025440. Its totient is φ = 10326528.

The previous prime is 12159911. The next prime is 12159941. The reversal of 12159931 is 13995121.

It is a happy number.

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 12159931 - 2⁵ = 12159899 is a prime.

It is a super-2 number, since 2×12159931² = 295727843849522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12159893 and 12159902.

It is not an unprimeable number, because it can be changed into a prime (12159911) 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, 7206 + ... + 8731.

It is an arithmetic number, because the mean of its divisors is an integer number (1753180).

Almost surely, 2^12159931 is an apocalyptic number.

12159931 is a deficient number, since it is larger than the sum of its proper divisors (1865509).

12159931 is a wasteful number, since it uses less digits than its factorization.

12159931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16053.

The product of its digits is 2430, while the sum is 31.

The square root of 12159931 is about 3487.1092612650. The cubic root of 12159931 is about 229.9554482075.

The spelling of 12159931 in words is "twelve million, one hundred fifty-nine thousand, nine hundred thirty-one".