31102122223 has 2 divisors, whose sum is σ = 31102122224. Its totient is φ = 31102122222.

The previous prime is 31102122179. The next prime is 31102122269. The reversal of 31102122223 is 32222120113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102122223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31102122223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31102122283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551061111 + 15551061112.

It is an arithmetic number, because the mean of its divisors is an integer number (15551061112).

Almost surely, 2^31102122223 is an apocalyptic number.

31102122223 is a deficient number, since it is larger than the sum of its proper divisors (1).

31102122223 is an equidigital number, since it uses as much as digits as its factorization.

31102122223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31102122223 its reverse (32222120113), we get a palindrome (63324242336).

The spelling of 31102122223 in words is "thirty-one billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-three".