8231682921 has 24 divisors (see below), whose sum is σ = 13928193504. Its totient is φ = 4276198080.

The previous prime is 8231682889. The next prime is 8231682937. The reversal of 8231682921 is 1292861328.

It is not a de Polignac number, because 8231682921 - 2⁵ = 8231682889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8231682971) 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 in 23 ways as a sum of consecutive naturals, for example, 2543740 + ... + 2546973.

It is an arithmetic number, because the mean of its divisors is an integer number (580341396).

Almost surely, 2^8231682921 is an apocalyptic number.

It is an amenable number.

8231682921 is a deficient number, since it is larger than the sum of its proper divisors (5696510583).

8231682921 is a wasteful number, since it uses less digits than its factorization.

8231682921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090741 (or 5090734 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 8231682921 is about 90728.6223911727. The cubic root of 8231682921 is about 2019.1234736615.

The spelling of 8231682921 in words is "eight billion, two hundred thirty-one million, six hundred eighty-two thousand, nine hundred twenty-one".