31433043133 has 2 divisors, whose sum is σ = 31433043134. Its totient is φ = 31433043132.

The previous prime is 31433043101. The next prime is 31433043193. The reversal of 31433043133 is 33134033413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24800895289 + 6632147844 = 157483^2 + 81438^2 .

It is a cyclic number.

It is not a de Polignac number, because 31433043133 - 2⁵ = 31433043101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31433043193) 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, 15716521566 + 15716521567.

It is an arithmetic number, because the mean of its divisors is an integer number (15716521567).

Almost surely, 2^31433043133 is an apocalyptic number.

It is an amenable number.

31433043133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31433043133 is an equidigital number, since it uses as much as digits as its factorization.

31433043133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31433043133 its reverse (33134033413), we get a palindrome (64567076546).

The spelling of 31433043133 in words is "thirty-one billion, four hundred thirty-three million, forty-three thousand, one hundred thirty-three".