231040097 has 2 divisors, whose sum is σ = 231040098. Its totient is φ = 231040096.

The previous prime is 231040093. The next prime is 231040151. The reversal of 231040097 is 790040132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223771681 + 7268416 = 14959^2 + 2696^2 .

It is a cyclic number.

It is not a de Polignac number, because 231040097 - 2² = 231040093 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231040093) 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, 115520048 + 115520049.

It is an arithmetic number, because the mean of its divisors is an integer number (115520049).

Almost surely, 2^231040097 is an apocalyptic number.

It is an amenable number.

231040097 is a deficient number, since it is larger than the sum of its proper divisors (1).

231040097 is an equidigital number, since it uses as much as digits as its factorization.

231040097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 231040097 is about 15200.0031907891. The cubic root of 231040097 is about 613.6147436250.

The spelling of 231040097 in words is "two hundred thirty-one million, forty thousand, ninety-seven".