23131320132 has 24 divisors (see below), whose sum is σ = 54623360736. Its totient is φ = 7617542848.

The previous prime is 23131320089. The next prime is 23131320137. The reversal of 23131320132 is 23102313132.

It is a junction number, because it is equal to n+sod(n) for n = 23131320099 and 23131320108.

It is not an unprimeable number, because it can be changed into a prime (23131320137) 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, 11611113 + ... + 11613104.

It is an arithmetic number, because the mean of its divisors is an integer number (2275973364).

Almost surely, 2^23131320132 is an apocalyptic number.

It is an amenable number.

23131320132 is an abundant number, since it is smaller than the sum of its proper divisors (31492040604).

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

23131320132 is a wasteful number, since it uses less digits than its factorization.

23131320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23224307 (or 23224305 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23131320132 its reverse (23102313132), we get a palindrome (46233633264).

The spelling of 23131320132 in words is "twenty-three billion, one hundred thirty-one million, three hundred twenty thousand, one hundred thirty-two".