97868831 has 2 divisors, whose sum is σ = 97868832. Its totient is φ = 97868830.

The previous prime is 97868807. The next prime is 97868833. The reversal of 97868831 is 13886879.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97868831 - 2²² = 93674527 is a prime.

It is a super-2 number, since 2×97868831² = 19156616162613122, which contains 22 as substring.

Together with 97868833, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97868831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97868833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48934415 + 48934416.

It is an arithmetic number, because the mean of its divisors is an integer number (48934416).

Almost surely, 2^97868831 is an apocalyptic number.

97868831 is a deficient number, since it is larger than the sum of its proper divisors (1).

97868831 is an equidigital number, since it uses as much as digits as its factorization.

97868831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 97868831 is about 9892.8676833363. The cubic root of 97868831 is about 460.8378413391.

The spelling of 97868831 in words is "ninety-seven million, eight hundred sixty-eight thousand, eight hundred thirty-one".