23311012128 has 48 divisors (see below), whose sum is σ = 61238913120. Its totient is φ = 7764304896.

The previous prime is 23311012099. The next prime is 23311012129. The reversal of 23311012128 is 82121011332.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 23311012098 and 23311012107.

It is not an unprimeable number, because it can be changed into a prime (23311012129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30903 + ... + 218121.

It is an arithmetic number, because the mean of its divisors is an integer number (1275810690).

Almost surely, 2^23311012128 is an apocalyptic number.

It is an amenable number.

23311012128 is an abundant number, since it is smaller than the sum of its proper divisors (37927900992).

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

23311012128 is a wasteful number, since it uses less digits than its factorization.

23311012128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188529 (or 188521 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 23311012128 in words is "twenty-three billion, three hundred eleven million, twelve thousand, one hundred twenty-eight".