23130534 has 32 divisors (see below), whose sum is σ = 53012736. Its totient is φ = 6590880.

The previous prime is 23130521. The next prime is 23130553. The reversal of 23130534 is 43503132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23130534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28624 + ... + 29420.

It is an arithmetic number, because the mean of its divisors is an integer number (1656648).

Almost surely, 2^23130534 is an apocalyptic number.

23130534 is an abundant number, since it is smaller than the sum of its proper divisors (29882202).

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

23130534 is a wasteful number, since it uses less digits than its factorization.

23130534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23130534 is about 4809.4213789187. The cubic root of 23130534 is about 284.9236853226.

Adding to 23130534 its reverse (43503132), we get a palindrome (66633666).

The spelling of 23130534 in words is "twenty-three million, one hundred thirty thousand, five hundred thirty-four".