31122213111047 has 2 divisors, whose sum is σ = 31122213111048. Its totient is φ = 31122213111046.

The previous prime is 31122213110987. The next prime is 31122213111097. The reversal of 31122213111047 is 74011131222113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31122213111047 - 2¹² = 31122213106951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31122213111097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561106555523 + 15561106555524.

It is an arithmetic number, because the mean of its divisors is an integer number (15561106555524).

Almost surely, 2^{31122213111047} is an apocalyptic number.

31122213111047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31122213111047 is an equidigital number, since it uses as much as digits as its factorization.

31122213111047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 31122213111047 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred thirteen million, one hundred eleven thousand, forty-seven".