23132213 has 8 divisors (see below), whose sum is σ = 25061400. Its totient is φ = 21350784.

The previous prime is 23132209. The next prime is 23132233. The reversal of 23132213 is 31223132.

It can be written as a sum of positive squares in 4 ways, for example, as 3833764 + 19298449 = 1958^2 + 4393^2 .

It is not a de Polignac number, because 23132213 - 2² = 23132209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23132191 and 23132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3068 + ... + 7461.

It is an arithmetic number, because the mean of its divisors is an integer number (3132675).

Almost surely, 2^23132213 is an apocalyptic number.

It is an amenable number.

23132213 is a deficient number, since it is larger than the sum of its proper divisors (1929187).

23132213 is an equidigital number, since it uses as much as digits as its factorization.

23132213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10568 (or 10542 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 23132213 is about 4809.5959289737. The cubic root of 23132213 is about 284.9305791726.

Adding to 23132213 its reverse (31223132), we get a palindrome (54355345).

The spelling of 23132213 in words is "twenty-three million, one hundred thirty-two thousand, two hundred thirteen".