216731076 has 12 divisors (see below), whose sum is σ = 505705872. Its totient is φ = 72243688.

The previous prime is 216731069. The next prime is 216731083. The reversal of 216731076 is 670137612.

216731076 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216731069) and next prime (216731083).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9030450 + ... + 9030473.

It is an arithmetic number, because the mean of its divisors is an integer number (42142156).

Almost surely, 2^216731076 is an apocalyptic number.

It is an amenable number.

216731076 is an abundant number, since it is smaller than the sum of its proper divisors (288974796).

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

216731076 is a wasteful number, since it uses less digits than its factorization.

216731076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18060930 (or 18060928 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 216731076 is about 14721.7891575718. The cubic root of 216731076 is about 600.6761599489.

Adding to 216731076 its reverse (670137612), we get a palindrome (886868688).

The spelling of 216731076 in words is "two hundred sixteen million, seven hundred thirty-one thousand, seventy-six".