263455123 has 2 divisors, whose sum is σ = 263455124. Its totient is φ = 263455122.

The previous prime is 263455117. The next prime is 263455141. The reversal of 263455123 is 321554362.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263455123 - 2⁵ = 263455091 is a prime.

It is not a weakly prime, because it can be changed into another prime (263455193) 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, 131727561 + 131727562.

It is an arithmetic number, because the mean of its divisors is an integer number (131727562).

Almost surely, 2^263455123 is an apocalyptic number.

263455123 is a deficient number, since it is larger than the sum of its proper divisors (1).

263455123 is an equidigital number, since it uses as much as digits as its factorization.

263455123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 31.

The square root of 263455123 is about 16231.3007180571. The cubic root of 263455123 is about 641.0652206842.

The spelling of 263455123 in words is "two hundred sixty-three million, four hundred fifty-five thousand, one hundred twenty-three".