279311 has 2 divisors, whose sum is σ = 279312. Its totient is φ = 279310.

The previous prime is 279269. The next prime is 279317. The reversal of 279311 is 113972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279311 - 2¹⁸ = 17167 is a prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139655 + 139656.

It is an arithmetic number, because the mean of its divisors is an integer number (139656).

2²⁷⁹³¹¹ is an apocalyptic number.

279311 is a deficient number, since it is larger than the sum of its proper divisors (1).

279311 is an equidigital number, since it uses as much as digits as its factorization.

279311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 23.

The square root of 279311 is about 528.4988174064. The cubic root of 279311 is about 65.3676210647.

The spelling of 279311 in words is "two hundred seventy-nine thousand, three hundred eleven".