231310297 has 2 divisors, whose sum is σ = 231310298. Its totient is φ = 231310296.

The previous prime is 231310291. The next prime is 231310319. The reversal of 231310297 is 792013132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198922816 + 32387481 = 14104^2 + 5691^2 .

It is a cyclic number.

It is not a de Polignac number, because 231310297 - 2²³ = 222921689 is a prime.

It is not a weakly prime, because it can be changed into another prime (231310291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655148 + 115655149.

It is an arithmetic number, because the mean of its divisors is an integer number (115655149).

Almost surely, 2^231310297 is an apocalyptic number.

It is an amenable number.

231310297 is a deficient number, since it is larger than the sum of its proper divisors (1).

231310297 is an equidigital number, since it uses as much as digits as its factorization.

231310297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 231310297 is about 15208.8887496753. Note that the first 3 decimals coincide. The cubic root of 231310297 is about 613.8538566828.

The spelling of 231310297 in words is "two hundred thirty-one million, three hundred ten thousand, two hundred ninety-seven".