216355043 has 4 divisors (see below), whose sum is σ = 225761808. Its totient is φ = 206948280.

The previous prime is 216355037. The next prime is 216355049. The reversal of 216355043 is 340553612.

216355043 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 an interprime number because it is at equal distance from previous prime (216355037) and next prime (216355049).

It is a cyclic number.

It is not a de Polignac number, because 216355043 - 2⁶ = 216354979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216354997 and 216355015.

It is not an unprimeable number, because it can be changed into a prime (216355049) 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, 4703348 + ... + 4703393.

It is an arithmetic number, because the mean of its divisors is an integer number (56440452).

Almost surely, 2^216355043 is an apocalyptic number.

216355043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

216355043 is a deficient number, since it is larger than the sum of its proper divisors (9406765).

216355043 is an equidigital number, since it uses as much as digits as its factorization.

216355043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9406764.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 216355043 is about 14709.0123053861. The cubic root of 216355043 is about 600.3285635623.

The spelling of 216355043 in words is "two hundred sixteen million, three hundred fifty-five thousand, forty-three".