23211130 has 16 divisors (see below), whose sum is σ = 42212520. Its totient is φ = 9188352.

The previous prime is 23211121. The next prime is 23211143. The reversal of 23211130 is 3111232.

It can be written as a sum of positive squares in 4 ways, for example, as 19829209 + 3381921 = 4453^2 + 1839^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23211130.

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, 10995 + ... + 12934.

Almost surely, 2^23211130 is an apocalyptic number.

23211130 is a deficient number, since it is larger than the sum of its proper divisors (19001390).

23211130 is a wasteful number, since it uses less digits than its factorization.

23211130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24033.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 23211130 is about 4817.7930632189. The cubic root of 23211130 is about 285.2542309307.

Adding to 23211130 its reverse (3111232), we get a palindrome (26322362).

The spelling of 23211130 in words is "twenty-three million, two hundred eleven thousand, one hundred thirty".