23031122120 has 64 divisors (see below), whose sum is σ = 53691934320. Its totient is φ = 8884076544.

The previous prime is 23031122063. The next prime is 23031122123. The reversal of 23031122120 is 2122113032.

It can be written as a sum of positive squares in 8 ways, for example, as 3775119364 + 19256002756 = 61442^2 + 138766^2 .

It is a super-2 number, since 2×23031122120² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23031122123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98384 + ... + 236096.

Almost surely, 2^23031122120 is an apocalyptic number.

23031122120 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 23031122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26845967160).

23031122120 is an abundant number, since it is smaller than the sum of its proper divisors (30660812200).

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

23031122120 is a wasteful number, since it uses less digits than its factorization.

23031122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137874 (or 137870 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23031122120 its reverse (2122113032), we get a palindrome (25153235152).

The spelling of 23031122120 in words is "twenty-three billion, thirty-one million, one hundred twenty-two thousand, one hundred twenty".