31222320002113 has 2 divisors, whose sum is σ = 31222320002114. Its totient is φ = 31222320002112.

The previous prime is 31222320002089. The next prime is 31222320002179. The reversal of 31222320002113 is 31120002322213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27062645539329 + 4159674462784 = 5202177^2 + 2039528^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222320002113 - 2²¹ = 31222317904961 is a prime.

It is not a weakly prime, because it can be changed into another prime (31222320002183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611160001056 + 15611160001057.

It is an arithmetic number, because the mean of its divisors is an integer number (15611160001057).

Almost surely, 2^{31222320002113} is an apocalyptic number.

It is an amenable number.

31222320002113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222320002113 is an equidigital number, since it uses as much as digits as its factorization.

31222320002113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31222320002113 its reverse (31120002322213), we get a palindrome (62342322324326).

The spelling of 31222320002113 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred twenty million, two thousand, one hundred thirteen".