97164731 has 2 divisors, whose sum is σ = 97164732. Its totient is φ = 97164730.

The previous prime is 97164721. The next prime is 97164737. The reversal of 97164731 is 13746179.

It is a strong prime.

It is an emirp because it is prime and its reverse (13746179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97164731 - 2²⁶ = 30055867 is a prime.

It is a super-2 number, since 2×97164731² = 18881969900604722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97164737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48582365 + 48582366.

It is an arithmetic number, because the mean of its divisors is an integer number (48582366).

Almost surely, 2^97164731 is an apocalyptic number.

97164731 is a deficient number, since it is larger than the sum of its proper divisors (1).

97164731 is an equidigital number, since it uses as much as digits as its factorization.

97164731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 38.

The square root of 97164731 is about 9857.2172036534. The cubic root of 97164731 is about 459.7300416647.

The spelling of 97164731 in words is "ninety-seven million, one hundred sixty-four thousand, seven hundred thirty-one".