216031343 has 12 divisors (see below), whose sum is σ = 245120064. Its totient is φ = 190053600.

The previous prime is 216031331. The next prime is 216031357. The reversal of 216031343 is 343130612.

It is not a de Polignac number, because 216031343 - 2⁶ = 216031279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216031313) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 25046 + ... + 32547.

It is an arithmetic number, because the mean of its divisors is an integer number (20426672).

Almost surely, 2^216031343 is an apocalyptic number.

216031343 is a deficient number, since it is larger than the sum of its proper divisors (29088721).

216031343 is a wasteful number, since it uses less digits than its factorization.

216031343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57646 (or 57635 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 216031343 is about 14698.0047285337. The cubic root of 216031343 is about 600.0290198927.

Adding to 216031343 its reverse (343130612), we get a palindrome (559161955).

The spelling of 216031343 in words is "two hundred sixteen million, thirty-one thousand, three hundred forty-three".