1316239 has 2 divisors, whose sum is σ = 1316240. Its totient is φ = 1316238.

The previous prime is 1316213. The next prime is 1316251. The reversal of 1316239 is 9326131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316239 - 2¹¹ = 1314191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316209) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658119 + 658120.

It is an arithmetic number, because the mean of its divisors is an integer number (658120).

2^1316239 is an apocalyptic number.

1316239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316239 is an equidigital number, since it uses as much as digits as its factorization.

1316239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 25.

The square root of 1316239 is about 1147.2745965984. The cubic root of 1316239 is about 109.5918483201.

The spelling of 1316239 in words is "one million, three hundred sixteen thousand, two hundred thirty-nine".