31122211103 has 2 divisors, whose sum is σ = 31122211104. Its totient is φ = 31122211102.

The previous prime is 31122211091. The next prime is 31122211111. The reversal of 31122211103 is 30111222113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31122211103 - 2¹⁰ = 31122210079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31122210103) 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, 15561105551 + 15561105552.

It is an arithmetic number, because the mean of its divisors is an integer number (15561105552).

Almost surely, 2^31122211103 is an apocalyptic number.

31122211103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122211103 is an equidigital number, since it uses as much as digits as its factorization.

31122211103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31122211103 its reverse (30111222113), we get a palindrome (61233433216).

The spelling of 31122211103 in words is "thirty-one billion, one hundred twenty-two million, two hundred eleven thousand, one hundred three".