231435313 has 2 divisors, whose sum is σ = 231435314. Its totient is φ = 231435312.

The previous prime is 231435299. The next prime is 231435317. The reversal of 231435313 is 313534132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165045409 + 66389904 = 12847^2 + 8148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231435313 is a prime.

It is not a weakly prime, because it can be changed into another prime (231435317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115717656 + 115717657.

It is an arithmetic number, because the mean of its divisors is an integer number (115717657).

Almost surely, 2^231435313 is an apocalyptic number.

It is an amenable number.

231435313 is a deficient number, since it is larger than the sum of its proper divisors (1).

231435313 is an equidigital number, since it uses as much as digits as its factorization.

231435313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 25.

The square root of 231435313 is about 15212.9981594688. The cubic root of 231435313 is about 613.9644263856.

Adding to 231435313 its reverse (313534132), we get a palindrome (544969445).

The spelling of 231435313 in words is "two hundred thirty-one million, four hundred thirty-five thousand, three hundred thirteen".