231165497 has 2 divisors, whose sum is σ = 231165498. Its totient is φ = 231165496.

The previous prime is 231165491. The next prime is 231165511. The reversal of 231165497 is 794561132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132342016 + 98823481 = 11504^2 + 9941^2 .

It is a cyclic number.

It is not a de Polignac number, because 231165497 - 2¹⁰ = 231164473 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 231165497.

It is not a weakly prime, because it can be changed into another prime (231165491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115582748 + 115582749.

It is an arithmetic number, because the mean of its divisors is an integer number (115582749).

Almost surely, 2^231165497 is an apocalyptic number.

It is an amenable number.

231165497 is a deficient number, since it is larger than the sum of its proper divisors (1).

231165497 is an equidigital number, since it uses as much as digits as its factorization.

231165497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 231165497 is about 15204.1276303509. The cubic root of 231165497 is about 613.7257393247.

The spelling of 231165497 in words is "two hundred thirty-one million, one hundred sixty-five thousand, four hundred ninety-seven".