47631317 has 2 divisors, whose sum is σ = 47631318. Its totient is φ = 47631316.

The previous prime is 47631211. The next prime is 47631319. The reversal of 47631317 is 71313674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32194276 + 15437041 = 5674^2 + 3929^2 .

It is a cyclic number.

It is not a de Polignac number, because 47631317 - 2¹² = 47627221 is a prime.

Together with 47631319, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2867360 and since 47631317 and 2867360 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47631319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23815658 + 23815659.

It is an arithmetic number, because the mean of its divisors is an integer number (23815659).

Almost surely, 2^47631317 is an apocalyptic number.

It is an amenable number.

47631317 is a deficient number, since it is larger than the sum of its proper divisors (1).

47631317 is an equidigital number, since it uses as much as digits as its factorization.

47631317 is an evil number, because the sum of its binary digits is even.

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

The square root of 47631317 is about 6901.5445372757. The cubic root of 47631317 is about 362.4912517905.

The spelling of 47631317 in words is "forty-seven million, six hundred thirty-one thousand, three hundred seventeen".