231248393 has 2 divisors, whose sum is σ = 231248394. Its totient is φ = 231248392.

The previous prime is 231248387. The next prime is 231248419. The reversal of 231248393 is 393842132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230675344 + 573049 = 15188^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 231248393 - 2⁸ = 231248137 is a prime.

It is not a weakly prime, because it can be changed into another prime (231248363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115624196 + 115624197.

It is an arithmetic number, because the mean of its divisors is an integer number (115624197).

Almost surely, 2^231248393 is an apocalyptic number.

It is an amenable number.

231248393 is a deficient number, since it is larger than the sum of its proper divisors (1).

231248393 is an equidigital number, since it uses as much as digits as its factorization.

231248393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 231248393 is about 15206.8534878192. The cubic root of 231248393 is about 613.7990912875.

It can be divided in two parts, 2312 and 48393, that added together give a palindrome (50705).

The spelling of 231248393 in words is "two hundred thirty-one million, two hundred forty-eight thousand, three hundred ninety-three".