31020232241 has 2 divisors, whose sum is σ = 31020232242. Its totient is φ = 31020232240.

The previous prime is 31020232237. The next prime is 31020232277. The reversal of 31020232241 is 14223202013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20410408225 + 10609824016 = 142865^2 + 103004^2 .

It is an emirp because it is prime and its reverse (14223202013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31020232241 - 2² = 31020232237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31020238241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510116120 + 15510116121.

It is an arithmetic number, because the mean of its divisors is an integer number (15510116121).

Almost surely, 2^31020232241 is an apocalyptic number.

It is an amenable number.

31020232241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020232241 is an equidigital number, since it uses as much as digits as its factorization.

31020232241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31020232241 its reverse (14223202013), we get a palindrome (45243434254).

The spelling of 31020232241 in words is "thirty-one billion, twenty million, two hundred thirty-two thousand, two hundred forty-one".