47312971 has 2 divisors, whose sum is σ = 47312972. Its totient is φ = 47312970.

The previous prime is 47312963. The next prime is 47312977. The reversal of 47312971 is 17921374.

47312971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47312971 - 2³ = 47312963 is a prime.

It is not a weakly prime, because it can be changed into another prime (47312977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23656485 + 23656486.

It is an arithmetic number, because the mean of its divisors is an integer number (23656486).

Almost surely, 2^47312971 is an apocalyptic number.

47312971 is a deficient number, since it is larger than the sum of its proper divisors (1).

47312971 is an equidigital number, since it uses as much as digits as its factorization.

47312971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The square root of 47312971 is about 6878.4424835859. The cubic root of 47312971 is about 361.6818705221.

The spelling of 47312971 in words is "forty-seven million, three hundred twelve thousand, nine hundred seventy-one".