31321223062133 has 2 divisors, whose sum is σ = 31321223062134. Its totient is φ = 31321223062132.

The previous prime is 31321223062067. The next prime is 31321223062141. The reversal of 31321223062133 is 33126032212313.

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., 30753923366884 + 567299695249 = 5545622^2 + 753193^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31321223062133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31321223062133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321223062033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660611531066 + 15660611531067.

It is an arithmetic number, because the mean of its divisors is an integer number (15660611531067).

Almost surely, 2^{31321223062133} is an apocalyptic number.

It is an amenable number.

31321223062133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321223062133 is an equidigital number, since it uses as much as digits as its factorization.

31321223062133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 31321223062133 its reverse (33126032212313), we get a palindrome (64447255274446).

The spelling of 31321223062133 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-three million, sixty-two thousand, one hundred thirty-three".