97969231 has 2 divisors, whose sum is σ = 97969232. Its totient is φ = 97969230.

The previous prime is 97969217. The next prime is 97969273. The reversal of 97969231 is 13296979.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97969231 - 2¹⁵ = 97936463 is a prime.

It is a super-2 number, since 2×97969231² = 19195940445462722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97969211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48984615 + 48984616.

It is an arithmetic number, because the mean of its divisors is an integer number (48984616).

Almost surely, 2^97969231 is an apocalyptic number.

97969231 is a deficient number, since it is larger than the sum of its proper divisors (1).

97969231 is an equidigital number, since it uses as much as digits as its factorization.

97969231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 97969231 is about 9897.9407454278. The cubic root of 97969231 is about 460.9953729598.

The spelling of 97969231 in words is "ninety-seven million, nine hundred sixty-nine thousand, two hundred thirty-one".