84671311 has 2 divisors, whose sum is σ = 84671312. Its totient is φ = 84671310.

The previous prime is 84671269. The next prime is 84671341. The reversal of 84671311 is 11317648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84671311 - 2⁹ = 84670799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84671341) 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, 42335655 + 42335656.

It is an arithmetic number, because the mean of its divisors is an integer number (42335656).

Almost surely, 2^84671311 is an apocalyptic number.

84671311 is a deficient number, since it is larger than the sum of its proper divisors (1).

84671311 is an equidigital number, since it uses as much as digits as its factorization.

84671311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 84671311 is about 9201.7015274350. The cubic root of 84671311 is about 439.1154941273.

Adding to 84671311 its reverse (11317648), we get a palindrome (95988959).

The spelling of 84671311 in words is "eighty-four million, six hundred seventy-one thousand, three hundred eleven".