47831219 has 2 divisors, whose sum is σ = 47831220. Its totient is φ = 47831218.

The previous prime is 47831197. The next prime is 47831249. The reversal of 47831219 is 91213874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47831219 - 2²⁰ = 46782643 is a prime.

It is a super-2 number, since 2×47831219² = 4575651022051922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2878613 and since 47831219 and 2878613 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47831249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23915609 + 23915610.

It is an arithmetic number, because the mean of its divisors is an integer number (23915610).

Almost surely, 2^47831219 is an apocalyptic number.

47831219 is a deficient number, since it is larger than the sum of its proper divisors (1).

47831219 is an equidigital number, since it uses as much as digits as its factorization.

47831219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 47831219 is about 6916.0117842583. The cubic root of 47831219 is about 362.9976524423.

The spelling of 47831219 in words is "forty-seven million, eight hundred thirty-one thousand, two hundred nineteen".