23039257 has 2 divisors, whose sum is σ = 23039258. Its totient is φ = 23039256.

The previous prime is 23039249. The next prime is 23039281. The reversal of 23039257 is 75293032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13329801 + 9709456 = 3651^2 + 3116^2 .

It is a cyclic number.

It is not a de Polignac number, because 23039257 - 2³ = 23039249 is a prime.

It is a super-2 number, since 2×23039257² = 1061614726224098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23039207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11519628 + 11519629.

It is an arithmetic number, because the mean of its divisors is an integer number (11519629).

Almost surely, 2^23039257 is an apocalyptic number.

It is an amenable number.

23039257 is a deficient number, since it is larger than the sum of its proper divisors (1).

23039257 is an equidigital number, since it uses as much as digits as its factorization.

23039257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 23039257 is about 4799.9226035427. The cubic root of 23039257 is about 284.5484055628.

The spelling of 23039257 in words is "twenty-three million, thirty-nine thousand, two hundred fifty-seven".