231303361 has 2 divisors, whose sum is σ = 231303362. Its totient is φ = 231303360.

The previous prime is 231303353. The next prime is 231303383. The reversal of 231303361 is 163303132.

It is an a-pointer prime, because the next prime (231303383) can be obtained adding 231303361 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205750336 + 25553025 = 14344^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 231303361 - 2³ = 231303353 is a prime.

It is not a weakly prime, because it can be changed into another prime (231303301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115651680 + 115651681.

It is an arithmetic number, because the mean of its divisors is an integer number (115651681).

Almost surely, 2^231303361 is an apocalyptic number.

It is an amenable number.

231303361 is a deficient number, since it is larger than the sum of its proper divisors (1).

231303361 is an equidigital number, since it uses as much as digits as its factorization.

231303361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 231303361 is about 15208.6607234168. The cubic root of 231303361 is about 613.8477210099.

Adding to 231303361 its reverse (163303132), we get a palindrome (394606493).

The spelling of 231303361 in words is "two hundred thirty-one million, three hundred three thousand, three hundred sixty-one".