231912697 has 2 divisors, whose sum is σ = 231912698. Its totient is φ = 231912696.

The previous prime is 231912673. The next prime is 231912719. The reversal of 231912697 is 796219132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118788201 + 113124496 = 10899^2 + 10636^2 .

It is a cyclic number.

It is not a de Polignac number, because 231912697 - 2¹¹ = 231910649 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231912097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115956348 + 115956349.

It is an arithmetic number, because the mean of its divisors is an integer number (115956349).

Almost surely, 2^231912697 is an apocalyptic number.

It is an amenable number.

231912697 is a deficient number, since it is larger than the sum of its proper divisors (1).

231912697 is an equidigital number, since it uses as much as digits as its factorization.

231912697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 231912697 is about 15228.6800806899. The cubic root of 231912697 is about 614.3862800431.

The spelling of 231912697 in words is "two hundred thirty-one million, nine hundred twelve thousand, six hundred ninety-seven".