253368431 has 2 divisors, whose sum is σ = 253368432. Its totient is φ = 253368430.

The previous prime is 253368421. The next prime is 253368433. The reversal of 253368431 is 134863352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253368431 is a prime.

It is a super-2 number, since 2×253368431² = 128391123654803522, which contains 22 as substring.

Together with 253368433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 253368391 and 253368400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253368433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126684215 + 126684216.

It is an arithmetic number, because the mean of its divisors is an integer number (126684216).

Almost surely, 2^253368431 is an apocalyptic number.

253368431 is a deficient number, since it is larger than the sum of its proper divisors (1).

253368431 is an equidigital number, since it uses as much as digits as its factorization.

253368431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 35.

The square root of 253368431 is about 15917.5510365131. The cubic root of 253368431 is about 632.7772168767. Note that the first 3 decimals are identical.

The spelling of 253368431 in words is "two hundred fifty-three million, three hundred sixty-eight thousand, four hundred thirty-one".