31112111047 has 2 divisors, whose sum is σ = 31112111048. Its totient is φ = 31112111046.

The previous prime is 31112111029. The next prime is 31112111053. The reversal of 31112111047 is 74011121113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31112111047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31112111447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556055523 + 15556055524.

It is an arithmetic number, because the mean of its divisors is an integer number (15556055524).

Almost surely, 2^31112111047 is an apocalyptic number.

31112111047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31112111047 is an equidigital number, since it uses as much as digits as its factorization.

31112111047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 22.

The spelling of 31112111047 in words is "thirty-one billion, one hundred twelve million, one hundred eleven thousand, forty-seven".