4231521216 has 112 divisors (see below), whose sum is σ = 13396874400. Its totient is φ = 1301999616.

The previous prime is 4231521199. The next prime is 4231521251. The reversal of 4231521216 is 6121251324.

4231521216 is a `hidden beast` number, since 423 + 1 + 5 + 21 + 216 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 4231521216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71721 + ... + 116648.

It is an arithmetic number, because the mean of its divisors is an integer number (119614950).

Almost surely, 2^4231521216 is an apocalyptic number.

It is an amenable number.

4231521216 is an abundant number, since it is smaller than the sum of its proper divisors (9165353184).

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

4231521216 is a wasteful number, since it uses less digits than its factorization.

4231521216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188403 (or 188387 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 4231521216 is about 65050.1438584113. The cubic root of 4231521216 is about 1617.4548787208.

The spelling of 4231521216 in words is "four billion, two hundred thirty-one million, five hundred twenty-one thousand, two hundred sixteen".