23217139900 has 36 divisors (see below), whose sum is σ = 51453144288. Its totient is φ = 9089261440.

The previous prime is 23217139877. The next prime is 23217139903. The reversal of 23217139900 is 993171232.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23217139900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23217139903) 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, 2465209 + ... + 2474608.

It is an arithmetic number, because the mean of its divisors is an integer number (1429254008).

Almost surely, 2^23217139900 is an apocalyptic number.

23217139900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23217139900 is an abundant number, since it is smaller than the sum of its proper divisors (28236004388).

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

23217139900 is a wasteful number, since it uses less digits than its factorization.

23217139900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939878 (or 4939871 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 23217139900 in words is "twenty-three billion, two hundred seventeen million, one hundred thirty-nine thousand, nine hundred".