23213188 has 6 divisors (see below), whose sum is σ = 40623086. Its totient is φ = 11606592.

The previous prime is 23213173. The next prime is 23213189. The reversal of 23213188 is 88131232.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 64 = 4818^2 + 8^2 .

It is not an unprimeable number, because it can be changed into a prime (23213189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2901645 + ... + 2901652.

Almost surely, 2^23213188 is an apocalyptic number.

It is an amenable number.

23213188 is a deficient number, since it is larger than the sum of its proper divisors (17409898).

23213188 is a wasteful number, since it uses less digits than its factorization.

23213188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803301 (or 5803299 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 23213188 is about 4818.0066417555. The cubic root of 23213188 is about 285.2626613096.

The spelling of 23213188 in words is "twenty-three million, two hundred thirteen thousand, one hundred eighty-eight".