23102257 has 2 divisors, whose sum is σ = 23102258. Its totient is φ = 23102256.

The previous prime is 23102249. The next prime is 23102267. The reversal of 23102257 is 75220132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 7134241 = 3996^2 + 2671^2 .

It is a cyclic number.

It is not a de Polignac number, because 23102257 - 2³ = 23102249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23102227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11551128 + 11551129.

It is an arithmetic number, because the mean of its divisors is an integer number (11551129).

Almost surely, 2^23102257 is an apocalyptic number.

It is an amenable number.

23102257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23102257 is an equidigital number, since it uses as much as digits as its factorization.

23102257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 23102257 is about 4806.4807291822. The cubic root of 23102257 is about 284.8075318951.

Adding to 23102257 its reverse (75220132), we get a palindrome (98322389).

The spelling of 23102257 in words is "twenty-three million, one hundred two thousand, two hundred fifty-seven".