23202123257 has 2 divisors, whose sum is σ = 23202123258. Its totient is φ = 23202123256.

The previous prime is 23202123193. The next prime is 23202123271. The reversal of 23202123257 is 75232120232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15085734976 + 8116388281 = 122824^2 + 90091^2 .

It is a cyclic number.

It is not a de Polignac number, because 23202123257 - 2⁶ = 23202123193 is a prime.

It is not a weakly prime, because it can be changed into another prime (23202120257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11601061628 + 11601061629.

It is an arithmetic number, because the mean of its divisors is an integer number (11601061629).

Almost surely, 2^23202123257 is an apocalyptic number.

It is an amenable number.

23202123257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23202123257 is an equidigital number, since it uses as much as digits as its factorization.

23202123257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

Adding to 23202123257 its reverse (75232120232), we get a palindrome (98434243489).

The spelling of 23202123257 in words is "twenty-three billion, two hundred two million, one hundred twenty-three thousand, two hundred fifty-seven".