263933431 has 2 divisors, whose sum is σ = 263933432. Its totient is φ = 263933430.

The previous prime is 263933413. The next prime is 263933447. The reversal of 263933431 is 134339362.

Together with previous prime (263933413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263933431 - 2⁹ = 263932919 is a prime.

It is a super-2 number, since 2×263933431² = 139321711998863522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263933401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131966715 + 131966716.

It is an arithmetic number, because the mean of its divisors is an integer number (131966716).

Almost surely, 2^263933431 is an apocalyptic number.

263933431 is a deficient number, since it is larger than the sum of its proper divisors (1).

263933431 is an equidigital number, since it uses as much as digits as its factorization.

263933431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 34.

The square root of 263933431 is about 16246.0281607536. The cubic root of 263933431 is about 641.4529416804.

The spelling of 263933431 in words is "two hundred sixty-three million, nine hundred thirty-three thousand, four hundred thirty-one".