23012131020 has 24 divisors (see below), whose sum is σ = 64433967024. Its totient is φ = 6136568256.

The previous prime is 23012130949. The next prime is 23012131151. The reversal of 23012131020 is 2013121032.

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 7 ways as a sum of consecutive naturals, for example, 191767699 + ... + 191767818.

It is an arithmetic number, because the mean of its divisors is an integer number (2684748626).

Almost surely, 2^23012131020 is an apocalyptic number.

23012131020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012131020 is an abundant number, since it is smaller than the sum of its proper divisors (41421836004).

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

23012131020 is a wasteful number, since it uses less digits than its factorization.

23012131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383535529 (or 383535527 counting only the distinct ones).

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

Adding to 23012131020 its reverse (2013121032), we get a palindrome (25025252052).

The spelling of 23012131020 in words is "twenty-three billion, twelve million, one hundred thirty-one thousand, twenty".