23031330 has 32 divisors (see below), whose sum is σ = 63172224. Its totient is φ = 5264256.

The previous prime is 23031329. The next prime is 23031367. The reversal of 23031330 is 3313032.

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

It is a Curzon 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, 54627 + ... + 55046.

It is an arithmetic number, because the mean of its divisors is an integer number (1974132).

Almost surely, 2^23031330 is an apocalyptic number.

23031330 is an abundant number, since it is smaller than the sum of its proper divisors (40140894).

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

23031330 is a wasteful number, since it uses less digits than its factorization.

23031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109690.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 23031330 is about 4799.0967900221. The cubic root of 23031330 is about 284.5157674449.

Adding to 23031330 its reverse (3313032), we get a palindrome (26344362).

The spelling of 23031330 in words is "twenty-three million, thirty-one thousand, three hundred thirty".