231492073 has 2 divisors, whose sum is σ = 231492074. Its totient is φ = 231492072.

The previous prime is 231492047. The next prime is 231492083. The reversal of 231492073 is 370294132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211179024 + 20313049 = 14532^2 + 4507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231492073 is a prime.

It is not a weakly prime, because it can be changed into another prime (231492013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115746036 + 115746037.

It is an arithmetic number, because the mean of its divisors is an integer number (115746037).

Almost surely, 2^231492073 is an apocalyptic number.

It is an amenable number.

231492073 is a deficient number, since it is larger than the sum of its proper divisors (1).

231492073 is an equidigital number, since it uses as much as digits as its factorization.

231492073 is an odious number, because the sum of its binary digits is odd.

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

The square root of 231492073 is about 15214.8635550898. The cubic root of 231492073 is about 614.0146143077.

The spelling of 231492073 in words is "two hundred thirty-one million, four hundred ninety-two thousand, seventy-three".