97391143 has 2 divisors, whose sum is σ = 97391144. Its totient is φ = 97391142.

The previous prime is 97391117. The next prime is 97391153. The reversal of 97391143 is 34119379.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97391143 - 2⁵ = 97391111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97391153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48695571 + 48695572.

It is an arithmetic number, because the mean of its divisors is an integer number (48695572).

Almost surely, 2^97391143 is an apocalyptic number.

97391143 is a deficient number, since it is larger than the sum of its proper divisors (1).

97391143 is an equidigital number, since it uses as much as digits as its factorization.

97391143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 97391143 is about 9868.6951011773. The cubic root of 97391143 is about 460.0868503309.

The spelling of 97391143 in words is "ninety-seven million, three hundred ninety-one thousand, one hundred forty-three".