84117311 has 4 divisors (see below), whose sum is σ = 84360072. Its totient is φ = 83874552.

The previous prime is 84117289. The next prime is 84117323. The reversal of 84117311 is 11371148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84117311 - 2⁶ = 84117247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84117211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120860 + ... + 121553.

It is an arithmetic number, because the mean of its divisors is an integer number (21090018).

Almost surely, 2^84117311 is an apocalyptic number.

84117311 is a deficient number, since it is larger than the sum of its proper divisors (242761).

84117311 is a wasteful number, since it uses less digits than its factorization.

84117311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242760.

The product of its digits is 672, while the sum is 26.

The square root of 84117311 is about 9171.5489967617. The cubic root of 84117311 is about 438.1556944598.

Adding to 84117311 its reverse (11371148), we get a palindrome (95488459).

The spelling of 84117311 in words is "eighty-four million, one hundred seventeen thousand, three hundred eleven".