311230097 has 2 divisors, whose sum is σ = 311230098. Its totient is φ = 311230096.

The previous prime is 311230091. The next prime is 311230121. The reversal of 311230097 is 790032113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311028496 + 201601 = 17636^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 311230097 - 2²⁸ = 42794641 is a prime.

It is not a weakly prime, because it can be changed into another prime (311230091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155615048 + 155615049.

It is an arithmetic number, because the mean of its divisors is an integer number (155615049).

Almost surely, 2^311230097 is an apocalyptic number.

It is an amenable number.

311230097 is a deficient number, since it is larger than the sum of its proper divisors (1).

311230097 is an equidigital number, since it uses as much as digits as its factorization.

311230097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 311230097 is about 17641.7146842363. The cubic root of 311230097 is about 677.6839436454.

The spelling of 311230097 in words is "three hundred eleven million, two hundred thirty thousand, ninety-seven".