251312023 has 2 divisors, whose sum is σ = 251312024. Its totient is φ = 251312022.

The previous prime is 251312011. The next prime is 251312041. The reversal of 251312023 is 320213152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251312023 - 2²⁵ = 217757591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251312123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125656011 + 125656012.

It is an arithmetic number, because the mean of its divisors is an integer number (125656012).

Almost surely, 2^251312023 is an apocalyptic number.

251312023 is a deficient number, since it is larger than the sum of its proper divisors (1).

251312023 is an equidigital number, since it uses as much as digits as its factorization.

251312023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 251312023 is about 15852.8238178566. The cubic root of 251312023 is about 631.0606329604.

Adding to 251312023 its reverse (320213152), we get a palindrome (571525175).

The spelling of 251312023 in words is "two hundred fifty-one million, three hundred twelve thousand, twenty-three".