23213130 has 32 divisors (see below), whose sum is σ = 55871424. Its totient is φ = 6172416.

The previous prime is 23213087. The next prime is 23213131. The reversal of 23213130 is 3131232.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (23213131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12097 + ... + 13883.

It is an arithmetic number, because the mean of its divisors is an integer number (1745982).

Almost surely, 2^23213130 is an apocalyptic number.

23213130 is an abundant number, since it is smaller than the sum of its proper divisors (32658294).

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

23213130 is a wasteful number, since it uses less digits than its factorization.

23213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 23213130 is about 4818.0006226650. Note that the first 3 decimals coincide. The cubic root of 23213130 is about 285.2624237255.

Adding to 23213130 its reverse (3131232), we get a palindrome (26344362).

The spelling of 23213130 in words is "twenty-three million, two hundred thirteen thousand, one hundred thirty".