23311111320 has 96 divisors (see below), whose sum is σ = 86584137120. Its totient is φ = 5328253440.

The previous prime is 23311111319. The next prime is 23311111333. The reversal of 23311111320 is 2311111332.

23311111320 is a `hidden beast` number, since 2 + 331 + 1 + 1 + 11 + 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 = 23311111293 and 23311111302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4622701 + ... + 4627740.

It is an arithmetic number, because the mean of its divisors is an integer number (901918095).

Almost surely, 2^23311111320 is an apocalyptic number.

23311111320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311111320 is an abundant number, since it is smaller than the sum of its proper divisors (63273025800).

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

23311111320 is a wasteful number, since it uses less digits than its factorization.

23311111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250465 (or 9250458 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23311111320 its reverse (2311111332), we get a palindrome (25622222652).

The spelling of 23311111320 in words is "twenty-three billion, three hundred eleven million, one hundred eleven thousand, three hundred twenty".