263411279 has 2 divisors, whose sum is σ = 263411280. Its totient is φ = 263411278.

The previous prime is 263411257. The next prime is 263411297. The reversal of 263411279 is 972114362.

Together with next prime (263411297) 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 a de Polignac number, because none of the positive numbers 2^k-263411279 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263411299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131705639 + 131705640.

It is an arithmetic number, because the mean of its divisors is an integer number (131705640).

Almost surely, 2^263411279 is an apocalyptic number.

263411279 is a deficient number, since it is larger than the sum of its proper divisors (1).

263411279 is an equidigital number, since it uses as much as digits as its factorization.

263411279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 263411279 is about 16229.9500615375. The cubic root of 263411279 is about 641.0296568501.

The spelling of 263411279 in words is "two hundred sixty-three million, four hundred eleven thousand, two hundred seventy-nine".