23231230040 has 32 divisors (see below), whose sum is σ = 54542890080. Its totient is φ = 8888470272.

The previous prime is 23231230019. The next prime is 23231230123. The reversal of 23231230040 is 4003213232.

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

It is a junction number, because it is equal to n+sod(n) for n = 23231229994 and 23231230021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12624749 + ... + 12626588.

It is an arithmetic number, because the mean of its divisors is an integer number (1704465315).

Almost surely, 2^23231230040 is an apocalyptic number.

23231230040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23231230040 is an abundant number, since it is smaller than the sum of its proper divisors (31311660040).

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

23231230040 is a wasteful number, since it uses less digits than its factorization.

23231230040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25251371 (or 25251367 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23231230040 its reverse (4003213232), we get a palindrome (27234443272).

The spelling of 23231230040 in words is "twenty-three billion, two hundred thirty-one million, two hundred thirty thousand, forty".