23130140 has 24 divisors (see below), whose sum is σ = 52989552. Its totient is φ = 8410880.

The previous prime is 23130137. The next prime is 23130169. The reversal of 23130140 is 4103132.

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, 52349 + ... + 52788.

It is an arithmetic number, because the mean of its divisors is an integer number (2207898).

Almost surely, 2^23130140 is an apocalyptic number.

23130140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23130140 is an abundant number, since it is smaller than the sum of its proper divisors (29859412).

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

23130140 is a wasteful number, since it uses less digits than its factorization.

23130140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105157 (or 105155 counting only the distinct ones).

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

The square root of 23130140 is about 4809.3804174758. The cubic root of 23130140 is about 284.9220675394.

Adding to 23130140 its reverse (4103132), we get a palindrome (27233272).

The spelling of 23130140 in words is "twenty-three million, one hundred thirty thousand, one hundred forty".