47317631 has 2 divisors, whose sum is σ = 47317632. Its totient is φ = 47317630.

The previous prime is 47317577. The next prime is 47317637. The reversal of 47317631 is 13671374.

47317631 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 a de Polignac number, because none of the positive numbers 2^k-47317631 is a prime.

It is a super-2 number, since 2×47317631² = 4477916406904322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47317637) 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, 23658815 + 23658816.

It is an arithmetic number, because the mean of its divisors is an integer number (23658816).

Almost surely, 2^47317631 is an apocalyptic number.

47317631 is a deficient number, since it is larger than the sum of its proper divisors (1).

47317631 is an equidigital number, since it uses as much as digits as its factorization.

47317631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 32.

The square root of 47317631 is about 6878.7812147211. The cubic root of 47317631 is about 361.6937445188.

The spelling of 47317631 in words is "forty-seven million, three hundred seventeen thousand, six hundred thirty-one".