253232431 has 2 divisors, whose sum is σ = 253232432. Its totient is φ = 253232430.

The previous prime is 253232407. The next prime is 253232449. The reversal of 253232431 is 134232352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253232431 - 2⁹ = 253231919 is a prime.

It is a super-2 number, since 2×253232431² = 128253328220339522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253232396 and 253232405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253232471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126616215 + 126616216.

It is an arithmetic number, because the mean of its divisors is an integer number (126616216).

Almost surely, 2^253232431 is an apocalyptic number.

253232431 is a deficient number, since it is larger than the sum of its proper divisors (1).

253232431 is an equidigital number, since it uses as much as digits as its factorization.

253232431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 253232431 is about 15913.2784491443. The cubic root of 253232431 is about 632.6639784812.

Adding to 253232431 its reverse (134232352), we get a palindrome (387464783).

The spelling of 253232431 in words is "two hundred fifty-three million, two hundred thirty-two thousand, four hundred thirty-one".