23311102020 has 48 divisors (see below), whose sum is σ = 65284191168. Its totient is φ = 6215045760.

The previous prime is 23311102007. The next prime is 23311102021. The reversal of 23311102020 is 2020111332.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (23311102021) 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, 284490 + ... + 357150.

It is an arithmetic number, because the mean of its divisors is an integer number (1360087316).

Almost surely, 2^23311102020 is an apocalyptic number.

23311102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311102020 is an abundant number, since it is smaller than the sum of its proper divisors (41973089148).

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

23311102020 is a wasteful number, since it uses less digits than its factorization.

23311102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78020 (or 78018 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23311102020 its reverse (2020111332), we get a palindrome (25331213352).

The spelling of 23311102020 in words is "twenty-three billion, three hundred eleven million, one hundred two thousand, twenty".