82231147 has 2 divisors, whose sum is σ = 82231148. Its totient is φ = 82231146.

The previous prime is 82231139. The next prime is 82231157. The reversal of 82231147 is 74113228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82231147 - 2³ = 82231139 is a prime.

It is not a weakly prime, because it can be changed into another prime (82231157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41115573 + 41115574.

It is an arithmetic number, because the mean of its divisors is an integer number (41115574).

Almost surely, 2^82231147 is an apocalyptic number.

82231147 is a deficient number, since it is larger than the sum of its proper divisors (1).

82231147 is an equidigital number, since it uses as much as digits as its factorization.

82231147 is an evil number, because the sum of its binary digits is even.

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

The square root of 82231147 is about 9068.1391145041. The cubic root of 82231147 is about 434.8559826238.

The spelling of 82231147 in words is "eighty-two million, two hundred thirty-one thousand, one hundred forty-seven".