23111310020 has 12 divisors (see below), whose sum is σ = 48533751084. Its totient is φ = 9244524000.

The previous prime is 23111309989. The next prime is 23111310029. The reversal of 23111310020 is 2001311132.

It can be written as a sum of positive squares in 2 ways, for example, as 3306940036 + 19804369984 = 57506^2 + 140728^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23111309977 and 23111310004.

It is not an unprimeable number, because it can be changed into a prime (23111310029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577782731 + ... + 577782770.

It is an arithmetic number, because the mean of its divisors is an integer number (4044479257).

Almost surely, 2^23111310020 is an apocalyptic number.

23111310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23111310020 is an abundant number, since it is smaller than the sum of its proper divisors (25422441064).

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

23111310020 is a wasteful number, since it uses less digits than its factorization.

23111310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155565510 (or 1155565508 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 23111310020 its reverse (2001311132), we get a palindrome (25112621152).

The spelling of 23111310020 in words is "twenty-three billion, one hundred eleven million, three hundred ten thousand, twenty".