23130522 has 40 divisors (see below), whose sum is σ = 52585632. Its totient is φ = 7597800.

The previous prime is 23130521. The next prime is 23130553. The reversal of 23130522 is 22503132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23130495 and 23130504.

It is not an unprimeable number, because it can be changed into a prime (23130521) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10497 + ... + 12507.

Almost surely, 2^23130522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23130522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26292816).

23130522 is an abundant number, since it is smaller than the sum of its proper divisors (29455110).

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

23130522 is a wasteful number, since it uses less digits than its factorization.

23130522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 2087 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23130522 is about 4809.4201313672. The cubic root of 23130522 is about 284.9236360503.

Adding to 23130522 its reverse (22503132), we get a palindrome (45633654).

The spelling of 23130522 in words is "twenty-three million, one hundred thirty thousand, five hundred twenty-two".