23213173 has 2 divisors, whose sum is σ = 23213174. Its totient is φ = 23213172.

The previous prime is 23213161. The next prime is 23213189. The reversal of 23213173 is 37131232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 49 = 4818^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23213173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23213153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11606586 + 11606587.

It is an arithmetic number, because the mean of its divisors is an integer number (11606587).

Almost surely, 2^23213173 is an apocalyptic number.

It is an amenable number.

23213173 is a deficient number, since it is larger than the sum of its proper divisors (1).

23213173 is an equidigital number, since it uses as much as digits as its factorization.

23213173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 22.

The square root of 23213173 is about 4818.0050850949. The cubic root of 23213173 is about 285.2625998654.

The spelling of 23213173 in words is "twenty-three million, two hundred thirteen thousand, one hundred seventy-three".