311146697 has 2 divisors, whose sum is σ = 311146698. Its totient is φ = 311146696.

The previous prime is 311146669. The next prime is 311146709. The reversal of 311146697 is 796641113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303770041 + 7376656 = 17429^2 + 2716^2 .

It is an emirp because it is prime and its reverse (796641113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311146697 - 2²⁸ = 42711241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311146697.

It is not a weakly prime, because it can be changed into another prime (311146607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155573348 + 155573349.

It is an arithmetic number, because the mean of its divisors is an integer number (155573349).

Almost surely, 2^311146697 is an apocalyptic number.

It is an amenable number.

311146697 is a deficient number, since it is larger than the sum of its proper divisors (1).

311146697 is an equidigital number, since it uses as much as digits as its factorization.

311146697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 311146697 is about 17639.3508100497. The cubic root of 311146697 is about 677.6234054877.

The spelling of 311146697 in words is "three hundred eleven million, one hundred forty-six thousand, six hundred ninety-seven".