231766097 has 2 divisors, whose sum is σ = 231766098. Its totient is φ = 231766096.

The previous prime is 231766063. The next prime is 231766103. The reversal of 231766097 is 790667132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184307776 + 47458321 = 13576^2 + 6889^2 .

It is a cyclic number.

It is not a de Polignac number, because 231766097 - 2⁸ = 231765841 is a prime.

It is a super-2 number, since 2×231766097² = 107431047437226818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231766037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115883048 + 115883049.

It is an arithmetic number, because the mean of its divisors is an integer number (115883049).

Almost surely, 2^231766097 is an apocalyptic number.

It is an amenable number.

231766097 is a deficient number, since it is larger than the sum of its proper divisors (1).

231766097 is an equidigital number, since it uses as much as digits as its factorization.

231766097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 231766097 is about 15223.8660333044. The cubic root of 231766097 is about 614.2567945153.

The spelling of 231766097 in words is "two hundred thirty-one million, seven hundred sixty-six thousand, ninety-seven".