253431623 has 2 divisors, whose sum is σ = 253431624. Its totient is φ = 253431622.

The previous prime is 253431613. The next prime is 253431643. The reversal of 253431623 is 326134352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253431623 - 2⁶ = 253431559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253431613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126715811 + 126715812.

It is an arithmetic number, because the mean of its divisors is an integer number (126715812).

Almost surely, 2^253431623 is an apocalyptic number.

253431623 is a deficient number, since it is larger than the sum of its proper divisors (1).

253431623 is an equidigital number, since it uses as much as digits as its factorization.

253431623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 253431623 is about 15919.5358914762. The cubic root of 253431623 is about 632.8298189759.

Adding to 253431623 its reverse (326134352), we get a palindrome (579565975).

The spelling of 253431623 in words is "two hundred fifty-three million, four hundred thirty-one thousand, six hundred twenty-three".