97431317 has 2 divisors, whose sum is σ = 97431318. Its totient is φ = 97431316.

The previous prime is 97431287. The next prime is 97431337. The reversal of 97431317 is 71313479.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70795396 + 26635921 = 8414^2 + 5161^2 .

It is a cyclic number.

It is not a de Polignac number, because 97431317 - 2¹⁰ = 97430293 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 (97431337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48715658 + 48715659.

It is an arithmetic number, because the mean of its divisors is an integer number (48715659).

Almost surely, 2^97431317 is an apocalyptic number.

It is an amenable number.

97431317 is a deficient number, since it is larger than the sum of its proper divisors (1).

97431317 is an equidigital number, since it uses as much as digits as its factorization.

97431317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 97431317 is about 9870.7303174588. The cubic root of 97431317 is about 460.1501038179.

The spelling of 97431317 in words is "ninety-seven million, four hundred thirty-one thousand, three hundred seventeen".