23001231320 has 64 divisors (see below), whose sum is σ = 52878636000. Its totient is φ = 9002188800.

The previous prime is 23001231317. The next prime is 23001231329. The reversal of 23001231320 is 2313210032.

It is a super-2 number, since 2×23001231320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001231329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370520 + ... + 428120.

Almost surely, 2^23001231320 is an apocalyptic number.

23001231320 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 23001231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26439318000).

23001231320 is an abundant number, since it is smaller than the sum of its proper divisors (29877404680).

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

23001231320 is a wasteful number, since it uses less digits than its factorization.

23001231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57828 (or 57824 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23001231320 its reverse (2313210032), we get a palindrome (25314441352).

The spelling of 23001231320 in words is "twenty-three billion, one million, two hundred thirty-one thousand, three hundred twenty".