23111240020 has 24 divisors (see below), whose sum is σ = 52945750368. Its totient is φ = 8404087200.

The previous prime is 23111240003. The next prime is 23111240041. The reversal of 23111240020 is 2004211132.

It is a junction number, because it is equal to n+sod(n) for n = 23111239976 and 23111240003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52525326 + ... + 52525765.

It is an arithmetic number, because the mean of its divisors is an integer number (2206072932).

Almost surely, 2^23111240020 is an apocalyptic number.

23111240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111240020 is an abundant number, since it is smaller than the sum of its proper divisors (29834510348).

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

23111240020 is a wasteful number, since it uses less digits than its factorization.

23111240020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105051111 (or 105051109 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23111240020 its reverse (2004211132), we get a palindrome (25115451152).

The spelling of 23111240020 in words is "twenty-three billion, one hundred eleven million, two hundred forty thousand, twenty".