12231564372 has 36 divisors (see below), whose sum is σ = 31006297140. Its totient is φ = 4065633792.

The previous prime is 12231564353. The next prime is 12231564439. The reversal of 12231564372 is 27346513221.

12231564372 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 1 + 5 + 643 + 7 + 2 = 666.

12231564372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8442669456 + 3788894916 = 91884^2 + 61554^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12231564372² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 468547 + ... + 493962.

Almost surely, 2^12231564372 is an apocalyptic number.

12231564372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231564372 is an abundant number, since it is smaller than the sum of its proper divisors (18774732768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231564372 is a wasteful number, since it uses less digits than its factorization.

12231564372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962872 (or 962867 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The spelling of 12231564372 in words is "twelve billion, two hundred thirty-one million, five hundred sixty-four thousand, three hundred seventy-two".