23131550900 has 36 divisors (see below), whose sum is σ = 50304449580. Its totient is φ = 9232531200.

The previous prime is 23131550881. The next prime is 23131550903. The reversal of 23131550900 is 905513132.

It can be written as a sum of positive squares in 6 ways, for example, as 4063807504 + 19067743396 = 63748^2 + 138086^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131550903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204785 + ... + 296984.

Almost surely, 2^23131550900 is an apocalyptic number.

23131550900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131550900 is an abundant number, since it is smaller than the sum of its proper divisors (27172898680).

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

23131550900 is a wasteful number, since it uses less digits than its factorization.

23131550900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502244 (or 502237 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 29.

The spelling of 23131550900 in words is "twenty-three billion, one hundred thirty-one million, five hundred fifty thousand, nine hundred".