251232623 has 2 divisors, whose sum is σ = 251232624. Its totient is φ = 251232622.

The previous prime is 251232607. The next prime is 251232637. The reversal of 251232623 is 326232152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251232623 - 2⁴ = 251232607 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 251232592 and 251232601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251232673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125616311 + 125616312.

It is an arithmetic number, because the mean of its divisors is an integer number (125616312).

Almost surely, 2^251232623 is an apocalyptic number.

251232623 is a deficient number, since it is larger than the sum of its proper divisors (1).

251232623 is an equidigital number, since it uses as much as digits as its factorization.

251232623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 26.

The square root of 251232623 is about 15850.3193343226. The cubic root of 251232623 is about 630.9941664600.

Adding to 251232623 its reverse (326232152), we get a palindrome (577464775).

The spelling of 251232623 in words is "two hundred fifty-one million, two hundred thirty-two thousand, six hundred twenty-three".