1311097 has 2 divisors, whose sum is σ = 1311098. Its totient is φ = 1311096.

The previous prime is 1311067. The next prime is 1311103. The reversal of 1311097 is 7901131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1301881 + 9216 = 1141^2 + 96^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1311047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655548 + 655549.

It is an arithmetic number, because the mean of its divisors is an integer number (655549).

2^1311097 is an apocalyptic number.

It is an amenable number.

1311097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311097 is an equidigital number, since it uses as much as digits as its factorization.

1311097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 1311097 is about 1145.0314406164. The cubic root of 1311097 is about 109.4489521097.

The spelling of 1311097 in words is "one million, three hundred eleven thousand, ninety-seven".