23123012100 has 72 divisors (see below), whose sum is σ = 66919966848. Its totient is φ = 6164534400.

The previous prime is 23123012093. The next prime is 23123012131. The reversal of 23123012100 is 121032132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23123012100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1551685 + ... + 1566515.

It is an arithmetic number, because the mean of its divisors is an integer number (929443984).

Almost surely, 2^23123012100 is an apocalyptic number.

23123012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23123012100 is an abundant number, since it is smaller than the sum of its proper divisors (43796954748).

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

23123012100 is a wasteful number, since it uses less digits than its factorization.

23123012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20045 (or 20038 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23123012100 its reverse (121032132), we get a palindrome (23244044232).

The spelling of 23123012100 in words is "twenty-three billion, one hundred twenty-three million, twelve thousand, one hundred".