231040532257 has 2 divisors, whose sum is σ = 231040532258. Its totient is φ = 231040532256.

The previous prime is 231040532243. The next prime is 231040532269. The reversal of 231040532257 is 752235040132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224206038016 + 6834494241 = 473504^2 + 82671^2 .

It is a cyclic number.

It is not a de Polignac number, because 231040532257 - 2¹⁹ = 231040007969 is a prime.

It is not a weakly prime, because it can be changed into another prime (231040532207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115520266128 + 115520266129.

It is an arithmetic number, because the mean of its divisors is an integer number (115520266129).

Almost surely, 2^231040532257 is an apocalyptic number.

It is an amenable number.

231040532257 is a deficient number, since it is larger than the sum of its proper divisors (1).

231040532257 is an equidigital number, since it uses as much as digits as its factorization.

231040532257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 34.

Adding to 231040532257 its reverse (752235040132), we get a palindrome (983275572389).

The spelling of 231040532257 in words is "two hundred thirty-one billion, forty million, five hundred thirty-two thousand, two hundred fifty-seven".