1310591 has 2 divisors, whose sum is σ = 1310592. Its totient is φ = 1310590.

The previous prime is 1310579. The next prime is 1310599. The reversal of 1310591 is 1950131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1310591 - 2⁶ = 1310527 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 (1310599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655295 + 655296.

It is an arithmetic number, because the mean of its divisors is an integer number (655296).

2^1310591 is an apocalyptic number.

1310591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310591 is an equidigital number, since it uses as much as digits as its factorization.

1310591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 1310591 is about 1144.8104646622. The cubic root of 1310591 is about 109.4348701880.

The spelling of 1310591 in words is "one million, three hundred ten thousand, five hundred ninety-one".