12031191092 has 24 divisors (see below), whose sum is σ = 21218711976. Its totient is φ = 5968867968.

The previous prime is 12031191041. The next prime is 12031191097. The reversal of 12031191092 is 29019113021.

It can be written as a sum of positive squares in 4 ways, for example, as 4095232036 + 7935959056 = 63994^2 + 89084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031191097) 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, 273458 + ... + 314390.

It is an arithmetic number, because the mean of its divisors is an integer number (884112999).

Almost surely, 2^12031191092 is an apocalyptic number.

It is an amenable number.

12031191092 is a deficient number, since it is larger than the sum of its proper divisors (9187520884).

12031191092 is a wasteful number, since it uses less digits than its factorization.

12031191092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41507 (or 41505 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 12031191092 in words is "twelve billion, thirty-one million, one hundred ninety-one thousand, ninety-two".