231603241 has 2 divisors, whose sum is σ = 231603242. Its totient is φ = 231603240.

The previous prime is 231603191. The next prime is 231603259. The reversal of 231603241 is 142306132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169130025 + 62473216 = 13005^2 + 7904^2 .

It is a cyclic number.

It is not a de Polignac number, because 231603241 - 2¹⁵ = 231570473 is a prime.

It is a super-2 number, since 2×231603241² = 107280122483408162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231603271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115801620 + 115801621.

It is an arithmetic number, because the mean of its divisors is an integer number (115801621).

Almost surely, 2^231603241 is an apocalyptic number.

It is an amenable number.

231603241 is a deficient number, since it is larger than the sum of its proper divisors (1).

231603241 is an equidigital number, since it uses as much as digits as its factorization.

231603241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 231603241 is about 15218.5163862973. The cubic root of 231603241 is about 614.1128867196.

Adding to 231603241 its reverse (142306132), we get a palindrome (373909373).

The spelling of 231603241 in words is "two hundred thirty-one million, six hundred three thousand, two hundred forty-one".