31323132241 has 2 divisors, whose sum is σ = 31323132242. Its totient is φ = 31323132240.

The previous prime is 31323132229. The next prime is 31323132257. The reversal of 31323132241 is 14223132313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28311427600 + 3011704641 = 168260^2 + 54879^2 .

It is a cyclic number.

It is not a de Polignac number, because 31323132241 - 2⁵ = 31323132209 is a prime.

It is a super-2 number, since 2×31323132241² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31323135241) 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, 15661566120 + 15661566121.

It is an arithmetic number, because the mean of its divisors is an integer number (15661566121).

Almost surely, 2^31323132241 is an apocalyptic number.

It is an amenable number.

31323132241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31323132241 is an equidigital number, since it uses as much as digits as its factorization.

31323132241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

Adding to 31323132241 its reverse (14223132313), we get a palindrome (45546264554).

The spelling of 31323132241 in words is "thirty-one billion, three hundred twenty-three million, one hundred thirty-two thousand, two hundred forty-one".