11311397 has 2 divisors, whose sum is σ = 11311398. Its totient is φ = 11311396.

The previous prime is 11311387. The next prime is 11311453. The reversal of 11311397 is 79311311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5924356 + 5387041 = 2434^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311397 - 2²⁰ = 10262821 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 (11311337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655698 + 5655699.

It is an arithmetic number, because the mean of its divisors is an integer number (5655699).

Almost surely, 2^11311397 is an apocalyptic number.

It is an amenable number.

11311397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311397 is an equidigital number, since it uses as much as digits as its factorization.

11311397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567, while the sum is 26.

The square root of 11311397 is about 3363.2420370827. The cubic root of 11311397 is about 224.4771199709.

The spelling of 11311397 in words is "eleven million, three hundred eleven thousand, three hundred ninety-seven".