97311397 has 2 divisors, whose sum is σ = 97311398. Its totient is φ = 97311396.

The previous prime is 97311391. The next prime is 97311421. The reversal of 97311397 is 79311379.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65060356 + 32251041 = 8066^2 + 5679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97311397 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 (97311391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48655698 + 48655699.

It is an arithmetic number, because the mean of its divisors is an integer number (48655699).

Almost surely, 2^97311397 is an apocalyptic number.

It is an amenable number.

97311397 is a deficient number, since it is larger than the sum of its proper divisors (1).

97311397 is an equidigital number, since it uses as much as digits as its factorization.

97311397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35721, while the sum is 40.

The square root of 97311397 is about 9864.6539219579. The cubic root of 97311397 is about 459.9612396452.

The spelling of 97311397 in words is "ninety-seven million, three hundred eleven thousand, three hundred ninety-seven".