97285231 has 2 divisors, whose sum is σ = 97285232. Its totient is φ = 97285230.

The previous prime is 97285219. The next prime is 97285259. The reversal of 97285231 is 13258279.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97285231 is a prime.

It is a super-2 number, since 2×97285231² = 18928832341446722, 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 (97285031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48642615 + 48642616.

It is an arithmetic number, because the mean of its divisors is an integer number (48642616).

Almost surely, 2^97285231 is an apocalyptic number.

97285231 is a deficient number, since it is larger than the sum of its proper divisors (1).

97285231 is an equidigital number, since it uses as much as digits as its factorization.

97285231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 97285231 is about 9863.3275825149. The cubic root of 97285231 is about 459.9200097206.

The spelling of 97285231 in words is "ninety-seven million, two hundred eighty-five thousand, two hundred thirty-one".