23113121320 has 64 divisors (see below), whose sum is σ = 53524540800. Its totient is φ = 8978914560.

The previous prime is 23113121293. The next prime is 23113121359. The reversal of 23113121320 is 2312131132.

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, 129546 + ... + 251014.

It is an arithmetic number, because the mean of its divisors is an integer number (836320950).

Almost surely, 2^23113121320 is an apocalyptic number.

23113121320 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 23113121320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26762270400).

23113121320 is an abundant number, since it is smaller than the sum of its proper divisors (30411419480).

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

23113121320 is a wasteful number, since it uses less digits than its factorization.

23113121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121618 (or 121614 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 23113121320 its reverse (2312131132), we get a palindrome (25425252452).

The spelling of 23113121320 in words is "twenty-three billion, one hundred thirteen million, one hundred twenty-one thousand, three hundred twenty".