231073697 has 2 divisors, whose sum is σ = 231073698. Its totient is φ = 231073696.

The previous prime is 231073631. The next prime is 231073723. The reversal of 231073697 is 796370132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230553856 + 519841 = 15184^2 + 721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231073697 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231073697.

It is not a weakly prime, because it can be changed into another prime (231073607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115536848 + 115536849.

It is an arithmetic number, because the mean of its divisors is an integer number (115536849).

Almost surely, 2^231073697 is an apocalyptic number.

It is an amenable number.

231073697 is a deficient number, since it is larger than the sum of its proper divisors (1).

231073697 is an equidigital number, since it uses as much as digits as its factorization.

231073697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 231073697 is about 15201.1084135335. The cubic root of 231073697 is about 613.6444880378.

The spelling of 231073697 in words is "two hundred thirty-one million, seventy-three thousand, six hundred ninety-seven".