31946835133 has 2 divisors, whose sum is σ = 31946835134. Its totient is φ = 31946835132.

The previous prime is 31946835119. The next prime is 31946835143. The reversal of 31946835133 is 33153864913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17668258084 + 14278577049 = 132922^2 + 119493^2 .

It is a cyclic number.

It is not a de Polignac number, because 31946835133 - 2⁵ = 31946835101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31946835103) 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, 15973417566 + 15973417567.

It is an arithmetic number, because the mean of its divisors is an integer number (15973417567).

Almost surely, 2^31946835133 is an apocalyptic number.

It is an amenable number.

31946835133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31946835133 is an equidigital number, since it uses as much as digits as its factorization.

31946835133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 46.

The spelling of 31946835133 in words is "thirty-one billion, nine hundred forty-six million, eight hundred thirty-five thousand, one hundred thirty-three".