23313121940 has 24 divisors (see below), whose sum is σ = 49787347680. Its totient is φ = 9167193248.

The previous prime is 23313121939. The next prime is 23313121963. The reversal of 23313121940 is 4912131332.

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, 9877262 + ... + 9879621.

It is an arithmetic number, because the mean of its divisors is an integer number (2074472820).

Almost surely, 2^23313121940 is an apocalyptic number.

23313121940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23313121940 is an abundant number, since it is smaller than the sum of its proper divisors (26474225740).

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

23313121940 is a wasteful number, since it uses less digits than its factorization.

23313121940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19756951 (or 19756949 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 23313121940 in words is "twenty-three billion, three hundred thirteen million, one hundred twenty-one thousand, nine hundred forty".