23112031320 has 384 divisors, whose sum is σ = 89738288640. Its totient is φ = 5240401920.

The previous prime is 23112031273. The next prime is 23112031427. The reversal of 23112031320 is 2313021132.

23112031320 is a `hidden beast` number, since 2 + 311 + 2 + 0 + 31 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23112031293 and 23112031302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8911944 + ... + 8914536.

It is an arithmetic number, because the mean of its divisors is an integer number (233693460).

Almost surely, 2^23112031320 is an apocalyptic number.

23112031320 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 23112031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44869144320).

23112031320 is an abundant number, since it is smaller than the sum of its proper divisors (66626257320).

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

23112031320 is a wasteful number, since it uses less digits than its factorization.

23112031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23112031320 its reverse (2313021132), we get a palindrome (25425052452).

The spelling of 23112031320 in words is "twenty-three billion, one hundred twelve million, thirty-one thousand, three hundred twenty".