47231819 has 2 divisors, whose sum is σ = 47231820. Its totient is φ = 47231818.

The previous prime is 47231791. The next prime is 47231839. The reversal of 47231819 is 91813274.

47231819 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 47231819 - 2¹² = 47227723 is a prime.

It is a super-2 number, since 2×47231819² = 4461689452097522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (47231839) 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, 23615909 + 23615910.

It is an arithmetic number, because the mean of its divisors is an integer number (23615910).

Almost surely, 2^47231819 is an apocalyptic number.

47231819 is a deficient number, since it is larger than the sum of its proper divisors (1).

47231819 is an equidigital number, since it uses as much as digits as its factorization.

47231819 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 47231819 is about 6872.5409420388. The cubic root of 47231819 is about 361.4749645808.

The spelling of 47231819 in words is "forty-seven million, two hundred thirty-one thousand, eight hundred nineteen".