23031452520 has 192 divisors, whose sum is σ = 77899086720. Its totient is φ = 6120002304.

The previous prime is 23031452519. The next prime is 23031452527. The reversal of 23031452520 is 2525413032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23031452527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2843917 + ... + 2852003.

It is an arithmetic number, because the mean of its divisors is an integer number (405724410).

Almost surely, 2^23031452520 is an apocalyptic number.

23031452520 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 23031452520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38949543360).

23031452520 is an abundant number, since it is smaller than the sum of its proper divisors (54867634200).

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

23031452520 is a wasteful number, since it uses less digits than its factorization.

23031452520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8406 (or 8390 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 23031452520 its reverse (2525413032), we get a palindrome (25556865552).

The spelling of 23031452520 in words is "twenty-three billion, thirty-one million, four hundred fifty-two thousand, five hundred twenty".