47182231 has 2 divisors, whose sum is σ = 47182232. Its totient is φ = 47182230.

The previous prime is 47182229. The next prime is 47182249. The reversal of 47182231 is 13228174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47182231 - 2¹ = 47182229 is a prime.

It is a super-2 number, since 2×47182231² = 4452325844274722, which contains 22 as substring.

Together with 47182229, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 47182231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47182211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23591115 + 23591116.

It is an arithmetic number, because the mean of its divisors is an integer number (23591116).

Almost surely, 2^47182231 is an apocalyptic number.

47182231 is a deficient number, since it is larger than the sum of its proper divisors (1).

47182231 is an equidigital number, since it uses as much as digits as its factorization.

47182231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 47182231 is about 6868.9323042231. The cubic root of 47182231 is about 361.3484178475.

The spelling of 47182231 in words is "forty-seven million, one hundred eighty-two thousand, two hundred thirty-one".