1316591 has 2 divisors, whose sum is σ = 1316592. Its totient is φ = 1316590.

The previous prime is 1316537. The next prime is 1316593. The reversal of 1316591 is 1956131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316591 - 2⁶ = 1316527 is a prime.

It is a super-2 number, since 2×1316591² = 3466823722562, which contains 22 as substring.

Together with 1316593, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1316591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316593) 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, 658295 + 658296.

It is an arithmetic number, because the mean of its divisors is an integer number (658296).

2^1316591 is an apocalyptic number.

1316591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316591 is an equidigital number, since it uses as much as digits as its factorization.

1316591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 26.

The square root of 1316591 is about 1147.4279933835. The cubic root of 1316591 is about 109.6016167822.

The spelling of 1316591 in words is "one million, three hundred sixteen thousand, five hundred ninety-one".