23131474560 has 320 divisors, whose sum is σ = 83235188520. Its totient is φ = 6121488384.

The previous prime is 23131474559. The next prime is 23131474573. The reversal of 23131474560 is 6547413132.

23131474560 is a `hidden beast` number, since 2 + 3 + 13 + 14 + 74 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22020185664 + 1111288896 = 148392^2 + 33336^2 .

It is a tau number, because it is divible by the number of its divisors (320).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7100452 + ... + 7103708.

Almost surely, 2^23131474560 is an apocalyptic number.

23131474560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23131474560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41617594260).

23131474560 is an abundant number, since it is smaller than the sum of its proper divisors (60103713960).

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

23131474560 is a wasteful number, since it uses less digits than its factorization.

23131474560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425 (or 3404 counting only the distinct ones).

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

Adding to 23131474560 its reverse (6547413132), we get a palindrome (29678887692).

The spelling of 23131474560 in words is "twenty-three billion, one hundred thirty-one million, four hundred seventy-four thousand, five hundred sixty".