8231149521 has 24 divisors (see below), whose sum is σ = 13591032000. Its totient is φ = 4702440096.

The previous prime is 8231149501. The next prime is 8231149559. The reversal of 8231149521 is 1259411328.

8231149521 is a `hidden beast` number, since 82 + 3 + 11 + 49 + 521 = 666.

It is not a de Polignac number, because 8231149521 - 2¹⁵ = 8231116753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8231149501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323730 + ... + 348228.

It is an arithmetic number, because the mean of its divisors is an integer number (566293000).

Almost surely, 2^8231149521 is an apocalyptic number.

It is an amenable number.

8231149521 is a deficient number, since it is larger than the sum of its proper divisors (5359882479).

8231149521 is a wasteful number, since it uses less digits than its factorization.

8231149521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29845 (or 29842 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 8231149521 is about 90725.6828081222. The cubic root of 8231149521 is about 2019.0798607197.

The spelling of 8231149521 in words is "eight billion, two hundred thirty-one million, one hundred forty-nine thousand, five hundred twenty-one".