31322020211117 has 2 divisors, whose sum is σ = 31322020211118. Its totient is φ = 31322020211116.

The previous prime is 31322020211113. The next prime is 31322020211221. The reversal of 31322020211117 is 71111202022313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25120655226601 + 6201364984516 = 5012051^2 + 2490254^2 .

It is an emirp because it is prime and its reverse (71111202022313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31322020211117 - 2² = 31322020211113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31322020211113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661010105558 + 15661010105559.

It is an arithmetic number, because the mean of its divisors is an integer number (15661010105559).

Almost surely, 2^{31322020211117} is an apocalyptic number.

It is an amenable number.

31322020211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

31322020211117 is an equidigital number, since it uses as much as digits as its factorization.

31322020211117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 31322020211117 in words is "thirty-one trillion, three hundred twenty-two billion, twenty million, two hundred eleven thousand, one hundred seventeen".