23031120020 has 48 divisors (see below), whose sum is σ = 49185118080. Its totient is φ = 9056851584.

The previous prime is 23031119999. The next prime is 23031120023. The reversal of 23031120020 is 2002113032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23031119977 and 23031120004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23031120023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665177 + ... + 698943.

It is an arithmetic number, because the mean of its divisors is an integer number (1024689960).

Almost surely, 2^23031120020 is an apocalyptic number.

23031120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23031120020 is an abundant number, since it is smaller than the sum of its proper divisors (26153998060).

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

23031120020 is a wasteful number, since it uses less digits than its factorization.

23031120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34352 (or 34350 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 23031120020 its reverse (2002113032), we get a palindrome (25033233052).

The spelling of 23031120020 in words is "twenty-three billion, thirty-one million, one hundred twenty thousand, twenty".