31100000047 has 2 divisors, whose sum is σ = 31100000048. Its totient is φ = 31100000046.

The previous prime is 31100000023. The next prime is 31100000051. The reversal of 31100000047 is 74000000113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31100000047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31109000047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15550000023 + 15550000024.

It is an arithmetic number, because the mean of its divisors is an integer number (15550000024).

Almost surely, 2^31100000047 is an apocalyptic number.

31100000047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31100000047 is an equidigital number, since it uses as much as digits as its factorization.

31100000047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The spelling of 31100000047 in words is "thirty-one billion, one hundred million, forty-seven", and thus it is an aban number.