23012318720 has 160 divisors (see below), whose sum is σ = 57142914048. Its totient is φ = 8880979968.

The previous prime is 23012318717. The next prime is 23012318779. The reversal of 23012318720 is 2781321032.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12028484 + ... + 12030396.

Almost surely, 2^23012318720 is an apocalyptic number.

23012318720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23012318720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28571457024).

23012318720 is an abundant number, since it is smaller than the sum of its proper divisors (34130595328).

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

23012318720 is a wasteful number, since it uses less digits than its factorization.

23012318720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 23012318720 its reverse (2781321032), we get a palindrome (25793639752).

The spelling of 23012318720 in words is "twenty-three billion, twelve million, three hundred eighteen thousand, seven hundred twenty".