12031279488 has 64 divisors (see below), whose sum is σ = 35508994800. Its totient is φ = 4010425344.

The previous prime is 12031279451. The next prime is 12031279489. The reversal of 12031279488 is 88497213021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×12031279488² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031279489) 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, 1737181 + ... + 1744092.

Almost surely, 2^12031279488 is an apocalyptic number.

12031279488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12031279488 is an abundant number, since it is smaller than the sum of its proper divisors (23477715312).

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

12031279488 is an equidigital number, since it uses as much as digits as its factorization.

12031279488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481296 (or 3481278 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 12031279488 in words is "twelve billion, thirty-one million, two hundred seventy-nine thousand, four hundred eighty-eight".