12331997161 has 8 divisors (see below), whose sum is σ = 13527416448. Its totient is φ = 11148966000.

The previous prime is 12331997141. The next prime is 12331997231. The reversal of 12331997161 is 16179913321.

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 12331997161 - 2²³ = 12323608553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12331997141) 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, 3094945 + ... + 3098926.

It is an arithmetic number, because the mean of its divisors is an integer number (1690927056).

Almost surely, 2^12331997161 is an apocalyptic number.

12331997161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12331997161 is a deficient number, since it is larger than the sum of its proper divisors (1195419287).

12331997161 is a wasteful number, since it uses less digits than its factorization.

12331997161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6194063.

The product of its digits is 61236, while the sum is 43.

The spelling of 12331997161 in words is "twelve billion, three hundred thirty-one million, nine hundred ninety-seven thousand, one hundred sixty-one".