8231464521 has 24 divisors (see below), whose sum is σ = 13877570304. Its totient is φ = 4603613760.

The previous prime is 8231464519. The next prime is 8231464559. The reversal of 8231464521 is 1254641328.

It is a happy number.

8231464521 is a `hidden beast` number, since 8 + 2 + 3 + 1 + 4 + 645 + 2 + 1 = 666.

It is not a de Polignac number, because 8231464521 - 2¹ = 8231464519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8231464121) 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, 1387020 + ... + 1392941.

It is an arithmetic number, because the mean of its divisors is an integer number (578232096).

Almost surely, 2^8231464521 is an apocalyptic number.

It is an amenable number.

8231464521 is a deficient number, since it is larger than the sum of its proper divisors (5646105783).

8231464521 is a wasteful number, since it uses less digits than its factorization.

8231464521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780021 (or 2780018 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 8231464521 is about 90727.4187938795. The cubic root of 8231464521 is about 2019.1056166218.

The spelling of 8231464521 in words is "eight billion, two hundred thirty-one million, four hundred sixty-four thousand, five hundred twenty-one".