8231991834 has 32 divisors (see below), whose sum is σ = 17977982400. Its totient is φ = 2492144000.

The previous prime is 8231991829. The next prime is 8231991863. The reversal of 8231991834 is 4381991328.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 9784 + ... + 128684.

It is an arithmetic number, because the mean of its divisors is an integer number (561811950).

Almost surely, 2^8231991834 is an apocalyptic number.

8231991834 is an abundant number, since it is smaller than the sum of its proper divisors (9745990566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8231991834 is a wasteful number, since it uses less digits than its factorization.

8231991834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119966.

The product of its digits is 373248, while the sum is 48.

The square root of 8231991834 is about 90730.3247762290. The cubic root of 8231991834 is about 2019.1487307765.

The spelling of 8231991834 in words is "eight billion, two hundred thirty-one million, nine hundred ninety-one thousand, eight hundred thirty-four".