23111302020 has 96 divisors (see below), whose sum is σ = 66263070720. Its totient is φ = 6015461760.

The previous prime is 23111301979. The next prime is 23111302031. The reversal of 23111302020 is 2020311132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5619765 + ... + 5623875.

It is an arithmetic number, because the mean of its divisors is an integer number (690240320).

Almost surely, 2^23111302020 is an apocalyptic number.

23111302020 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 23111302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33131535360).

23111302020 is an abundant number, since it is smaller than the sum of its proper divisors (43151768700).

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

23111302020 is a wasteful number, since it uses less digits than its factorization.

23111302020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6345 (or 6343 counting only the distinct ones).

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

Adding to 23111302020 its reverse (2020311132), we get a palindrome (25131613152).

The spelling of 23111302020 in words is "twenty-three billion, one hundred eleven million, three hundred two thousand, twenty".