97927831 has 2 divisors, whose sum is σ = 97927832. Its totient is φ = 97927830.

The previous prime is 97927807. The next prime is 97927849. The reversal of 97927831 is 13872979.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97927831 - 2¹⁹ = 97403543 is a prime.

It is a super-2 number, since 2×97927831² = 19179720168729122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97927891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48963915 + 48963916.

It is an arithmetic number, because the mean of its divisors is an integer number (48963916).

Almost surely, 2^97927831 is an apocalyptic number.

97927831 is a deficient number, since it is larger than the sum of its proper divisors (1).

97927831 is an equidigital number, since it uses as much as digits as its factorization.

97927831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 97927831 is about 9895.8491803382. The cubic root of 97927831 is about 460.9304277479.

The spelling of 97927831 in words is "ninety-seven million, nine hundred twenty-seven thousand, eight hundred thirty-one".