12132431020 has 24 divisors (see below), whose sum is σ = 25858378224. Its totient is φ = 4780539456.

The previous prime is 12132430967. The next prime is 12132431027. The reversal of 12132431020 is 2013423121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12132431027) 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, 4525687 + ... + 4528366.

It is an arithmetic number, because the mean of its divisors is an integer number (1077432426).

Almost surely, 2^12132431020 is an apocalyptic number.

12132431020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132431020 is an abundant number, since it is smaller than the sum of its proper divisors (13725947204).

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

12132431020 is a wasteful number, since it uses less digits than its factorization.

12132431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9054129 (or 9054127 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12132431020 its reverse (2013423121), we get a palindrome (14145854141).

The spelling of 12132431020 in words is "twelve billion, one hundred thirty-two million, four hundred thirty-one thousand, twenty".