23123520420 has 288 divisors, whose sum is σ = 88485457536. Its totient is φ = 4435200000.

The previous prime is 23123520383. The next prime is 23123520421. The reversal of 23123520420 is 2402532132.

It is a super-2 number, since 2×23123520420² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23123520421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 392920 + ... + 447920.

It is an arithmetic number, because the mean of its divisors is an integer number (307241172).

Almost surely, 2^23123520420 is an apocalyptic number.

23123520420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23123520420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44242728768).

23123520420 is an abundant number, since it is smaller than the sum of its proper divisors (65361937116).

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

23123520420 is a wasteful number, since it uses less digits than its factorization.

23123520420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55051 (or 55042 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The spelling of 23123520420 in words is "twenty-three billion, one hundred twenty-three million, five hundred twenty thousand, four hundred twenty".