31974950047 has 2 divisors, whose sum is σ = 31974950048. Its totient is φ = 31974950046.

The previous prime is 31974950041. The next prime is 31974950057. The reversal of 31974950047 is 74005947913.

It is a weak prime.

It is an emirp because it is prime and its reverse (74005947913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31974950047 - 2¹¹ = 31974947999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31974950041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15987475023 + 15987475024.

It is an arithmetic number, because the mean of its divisors is an integer number (15987475024).

Almost surely, 2^31974950047 is an apocalyptic number.

31974950047 is a deficient number, since it is larger than the sum of its proper divisors (1).

31974950047 is an equidigital number, since it uses as much as digits as its factorization.

31974950047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 31974950047 in words is "thirty-one billion, nine hundred seventy-four million, nine hundred fifty thousand, forty-seven".