216284800031 has 4 divisors (see below), whose sum is σ = 216338834712. Its totient is φ = 216230765352.

The previous prime is 216284800009. The next prime is 216284800033. The reversal of 216284800031 is 130008482612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216284800031 - 2¹⁰ = 216284799007 is a prime.

It is a super-2 number, since 2×216284800031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216284799964 and 216284800000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216284800033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27011336 + ... + 27019341.

It is an arithmetic number, because the mean of its divisors is an integer number (54084708678).

Almost surely, 2^216284800031 is an apocalyptic number.

216284800031 is a deficient number, since it is larger than the sum of its proper divisors (54034681).

216284800031 is an equidigital number, since it uses as much as digits as its factorization.

216284800031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54034680.

The product of its (nonzero) digits is 18432, while the sum is 35.

The spelling of 216284800031 in words is "two hundred sixteen billion, two hundred eighty-four million, eight hundred thousand, thirty-one".