216031732 has 24 divisors (see below), whose sum is σ = 450850176. Its totient is φ = 88559328.

The previous prime is 216031727. The next prime is 216031757. The reversal of 216031732 is 237130612.

It is a junction number, because it is equal to n+sod(n) for n = 216031697 and 216031706.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167083 + ... + 168370.

It is an arithmetic number, because the mean of its divisors is an integer number (18785424).

Almost surely, 2^216031732 is an apocalyptic number.

It is an amenable number.

216031732 is an abundant number, since it is smaller than the sum of its proper divisors (234818444).

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

216031732 is a wasteful number, since it uses less digits than its factorization.

216031732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335487 (or 335485 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 216031732 is about 14698.0179616165. The cubic root of 216031732 is about 600.0293800428.

The spelling of 216031732 in words is "two hundred sixteen million, thirty-one thousand, seven hundred thirty-two".