31113211211113 has 2 divisors, whose sum is σ = 31113211211114. Its totient is φ = 31113211211112.

The previous prime is 31113211211087. The next prime is 31113211211119. The reversal of 31113211211113 is 31111211231113.

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., 30122841911184 + 990369299929 = 5488428^2 + 995173^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113211211113 - 2¹³ = 31113211202921 is a prime.

It is not a weakly prime, because it can be changed into another prime (31113211211119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556605605556 + 15556605605557.

It is an arithmetic number, because the mean of its divisors is an integer number (15556605605557).

Almost surely, 2^{31113211211113} is an apocalyptic number.

It is an amenable number.

31113211211113 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113211211113 is an equidigital number, since it uses as much as digits as its factorization.

31113211211113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 22.

Adding to 31113211211113 its reverse (31111211231113), we get a palindrome (62224422442226).

The spelling of 31113211211113 in words is "thirty-one trillion, one hundred thirteen billion, two hundred eleven million, two hundred eleven thousand, one hundred thirteen".