84091933231 has 4 divisors (see below), whose sum is σ = 84102857712. Its totient is φ = 84081008752.

The previous prime is 84091933223. The next prime is 84091933241. The reversal of 84091933231 is 13233919048.

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 84091933231 - 2³ = 84091933223 is a prime.

It is a super-2 number, since 2×84091933231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84091933241) 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, 5450686 + ... + 5466091.

It is an arithmetic number, because the mean of its divisors is an integer number (21025714428).

Almost surely, 2^84091933231 is an apocalyptic number.

84091933231 is a deficient number, since it is larger than the sum of its proper divisors (10924481).

84091933231 is a wasteful number, since it uses less digits than its factorization.

84091933231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10924480.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 84091933231 in words is "eighty-four billion, ninety-one million, nine hundred thirty-three thousand, two hundred thirty-one".