216344023 has 8 divisors (see below), whose sum is σ = 261794592. Its totient is φ = 174529536.

The previous prime is 216343979. The next prime is 216344033. The reversal of 216344023 is 320443612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216344023 - 2²¹ = 214246871 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 (216344033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908890 + ... + 909127.

It is an arithmetic number, because the mean of its divisors is an integer number (32724324).

Almost surely, 2^216344023 is an apocalyptic number.

216344023 is a deficient number, since it is larger than the sum of its proper divisors (45450569).

216344023 is a wasteful number, since it uses less digits than its factorization.

216344023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818041.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 216344023 is about 14708.6377003447. The cubic root of 216344023 is about 600.3183708516.

Adding to 216344023 its reverse (320443612), we get a palindrome (536787635).

The spelling of 216344023 in words is "two hundred sixteen million, three hundred forty-four thousand, twenty-three".