97973143 has 2 divisors, whose sum is σ = 97973144. Its totient is φ = 97973142.

The previous prime is 97973129. The next prime is 97973153. The reversal of 97973143 is 34137979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97973143 - 2⁵ = 97973111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97973143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97973153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48986571 + 48986572.

It is an arithmetic number, because the mean of its divisors is an integer number (48986572).

Almost surely, 2^97973143 is an apocalyptic number.

97973143 is a deficient number, since it is larger than the sum of its proper divisors (1).

97973143 is an equidigital number, since it uses as much as digits as its factorization.

97973143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 43.

The square root of 97973143 is about 9898.1383603181. The cubic root of 97973143 is about 461.0015088656.

The spelling of 97973143 in words is "ninety-seven million, nine hundred seventy-three thousand, one hundred forty-three".