216361043 has 4 divisors (see below), whose sum is σ = 216964080. Its totient is φ = 215758008.

The previous prime is 216361039. The next prime is 216361049. The reversal of 216361043 is 340163612.

216361043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216361043 - 2² = 216361039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216361049) 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, 300980 + ... + 301697.

It is an arithmetic number, because the mean of its divisors is an integer number (54241020).

Almost surely, 2^216361043 is an apocalyptic number.

216361043 is a deficient number, since it is larger than the sum of its proper divisors (603037).

216361043 is an equidigital number, since it uses as much as digits as its factorization.

216361043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603036.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 216361043 is about 14709.2162605626. The cubic root of 216361043 is about 600.3341129871.

The spelling of 216361043 in words is "two hundred sixteen million, three hundred sixty-one thousand, forty-three".