23013021020 has 24 divisors (see below), whose sum is σ = 52720739568. Its totient is φ = 8368371200.

The previous prime is 23013021019. The next prime is 23013021071. The reversal of 23013021020 is 2012031032.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23013020986 and 23013021004.

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, 52302101 + ... + 52302540.

It is an arithmetic number, because the mean of its divisors is an integer number (2196697482).

Almost surely, 2^23013021020 is an apocalyptic number.

23013021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013021020 is an abundant number, since it is smaller than the sum of its proper divisors (29707718548).

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

23013021020 is a wasteful number, since it uses less digits than its factorization.

23013021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104604661 (or 104604659 counting only the distinct ones).

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

Adding to 23013021020 its reverse (2012031032), we get a palindrome (25025052052).

The spelling of 23013021020 in words is "twenty-three billion, thirteen million, twenty-one thousand, twenty".