216741539831 has 8 divisors (see below), whose sum is σ = 229637150064. Its totient is φ = 203862163840.

The previous prime is 216741539821. The next prime is 216741539867. The reversal of 216741539831 is 138935147612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216741539831 - 2³⁰ = 215667798007 is a prime.

It is a super-2 number, since 2×216741539831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216741539831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216741539821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4031060 + ... + 4084473.

It is an arithmetic number, because the mean of its divisors is an integer number (28704643758).

Almost surely, 2^216741539831 is an apocalyptic number.

216741539831 is a deficient number, since it is larger than the sum of its proper divisors (12895610233).

216741539831 is a wasteful number, since it uses less digits than its factorization.

216741539831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117121.

The product of its digits is 1088640, while the sum is 50.

The spelling of 216741539831 in words is "two hundred sixteen billion, seven hundred forty-one million, five hundred thirty-nine thousand, eight hundred thirty-one".