84081311 has 2 divisors, whose sum is σ = 84081312. Its totient is φ = 84081310.

The previous prime is 84081301. The next prime is 84081323. The reversal of 84081311 is 11318048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84081311 - 2⁶ = 84081247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84081301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42040655 + 42040656.

It is an arithmetic number, because the mean of its divisors is an integer number (42040656).

Almost surely, 2^84081311 is an apocalyptic number.

84081311 is a deficient number, since it is larger than the sum of its proper divisors (1).

84081311 is an equidigital number, since it uses as much as digits as its factorization.

84081311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 84081311 is about 9169.5861956797. The cubic root of 84081311 is about 438.0931791639.

Adding to 84081311 its reverse (11318048), we get a palindrome (95399359).

The spelling of 84081311 in words is "eighty-four million, eighty-one thousand, three hundred eleven".