97191313 has 2 divisors, whose sum is σ = 97191314. Its totient is φ = 97191312.

The previous prime is 97191299. The next prime is 97191319. The reversal of 97191313 is 31319179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81414529 + 15776784 = 9023^2 + 3972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97191313 is a prime.

It is not a weakly prime, because it can be changed into another prime (97191319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48595656 + 48595657.

It is an arithmetic number, because the mean of its divisors is an integer number (48595657).

Almost surely, 2^97191313 is an apocalyptic number.

It is an amenable number.

97191313 is a deficient number, since it is larger than the sum of its proper divisors (1).

97191313 is an equidigital number, since it uses as much as digits as its factorization.

97191313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103, while the sum is 34.

The square root of 97191313 is about 9858.5654635956. The cubic root of 97191313 is about 459.7719616411.

The spelling of 97191313 in words is "ninety-seven million, one hundred ninety-one thousand, three hundred thirteen".