23031025040 has 20 divisors (see below), whose sum is σ = 53547133404. Its totient is φ = 9212409984.

The previous prime is 23031025027. The next prime is 23031025049. The reversal of 23031025040 is 4052013032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16217513104 + 6813511936 = 127348^2 + 82544^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×23031025040² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (23031025049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143943827 + ... + 143943986.

Almost surely, 2^23031025040 is an apocalyptic number.

23031025040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031025040 is an abundant number, since it is smaller than the sum of its proper divisors (30516108364).

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

23031025040 is a wasteful number, since it uses less digits than its factorization.

23031025040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287887826 (or 287887820 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 23031025040 its reverse (4052013032), we get a palindrome (27083038072).

The spelling of 23031025040 in words is "twenty-three billion, thirty-one million, twenty-five thousand, forty".