216441373 has 4 divisors (see below), whose sum is σ = 217264608. Its totient is φ = 215618140.

The previous prime is 216441367. The next prime is 216441427. The reversal of 216441373 is 373144612.

216441373 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216441373 is a prime.

It is a super-2 number, since 2×216441373² = 93693735892250258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216441353) 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, 411223 + ... + 411748.

It is an arithmetic number, because the mean of its divisors is an integer number (54316152).

Almost surely, 2^216441373 is an apocalyptic number.

It is an amenable number.

216441373 is a deficient number, since it is larger than the sum of its proper divisors (823235).

216441373 is an equidigital number, since it uses as much as digits as its factorization.

216441373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823234.

The product of its digits is 12096, while the sum is 31.

The square root of 216441373 is about 14711.9466081141. The cubic root of 216441373 is about 600.4084006555.

Adding to 216441373 its reverse (373144612), we get a palindrome (589585985).

The spelling of 216441373 in words is "two hundred sixteen million, four hundred forty-one thousand, three hundred seventy-three".