31032241 has 2 divisors, whose sum is σ = 31032242. Its totient is φ = 31032240.

The previous prime is 31032223. The next prime is 31032251. The reversal of 31032241 is 14223013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30569841 + 462400 = 5529^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 31032241 - 2⁹ = 31031729 is a prime.

It is not a weakly prime, because it can be changed into another prime (31032251) 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, 15516120 + 15516121.

It is an arithmetic number, because the mean of its divisors is an integer number (15516121).

Almost surely, 2^31032241 is an apocalyptic number.

It is an amenable number.

31032241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032241 is an equidigital number, since it uses as much as digits as its factorization.

31032241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31032241 is about 5570.6589376841. The cubic root of 31032241 is about 314.2469320800.

Adding to 31032241 its reverse (14223013), we get a palindrome (45255254).

The spelling of 31032241 in words is "thirty-one million, thirty-two thousand, two hundred forty-one".