231243097 has 2 divisors, whose sum is σ = 231243098. Its totient is φ = 231243096.

The previous prime is 231243079. The next prime is 231243109. The reversal of 231243097 is 790342132.

Together with previous prime (231243079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134003776 + 97239321 = 11576^2 + 9861^2 .

It is a cyclic number.

It is not a de Polignac number, because 231243097 - 2⁷ = 231242969 is a prime.

It is not a weakly prime, because it can be changed into another prime (231243017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115621548 + 115621549.

It is an arithmetic number, because the mean of its divisors is an integer number (115621549).

Almost surely, 2^231243097 is an apocalyptic number.

It is an amenable number.

231243097 is a deficient number, since it is larger than the sum of its proper divisors (1).

231243097 is an equidigital number, since it uses as much as digits as its factorization.

231243097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 231243097 is about 15206.6793548098. The cubic root of 231243097 is about 613.7944055543.

The spelling of 231243097 in words is "two hundred thirty-one million, two hundred forty-three thousand, ninety-seven".