31122122107 has 2 divisors, whose sum is σ = 31122122108. Its totient is φ = 31122122106.

The previous prime is 31122122093. The next prime is 31122122111. The reversal of 31122122107 is 70122122113.

It is a strong prime.

It is an emirp because it is prime and its reverse (70122122113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31122122107 is a prime.

It is not a weakly prime, because it can be changed into another prime (31122122177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561061053 + 15561061054.

It is an arithmetic number, because the mean of its divisors is an integer number (15561061054).

Almost surely, 2^31122122107 is an apocalyptic number.

31122122107 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122122107 is an equidigital number, since it uses as much as digits as its factorization.

31122122107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The spelling of 31122122107 in words is "thirty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred seven".