216442023 has 8 divisors (see below), whose sum is σ = 329816448. Its totient is φ = 123681144.

The previous prime is 216442021. The next prime is 216442027. The reversal of 216442023 is 320244612.

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

It is not a de Polignac number, because 216442023 - 2¹ = 216442021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216441984 and 216442002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216442021) 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, 5153361 + ... + 5153402.

It is an arithmetic number, because the mean of its divisors is an integer number (41227056).

Almost surely, 2^216442023 is an apocalyptic number.

216442023 is a deficient number, since it is larger than the sum of its proper divisors (113374425).

216442023 is a wasteful number, since it uses less digits than its factorization.

216442023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306773.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 216442023 is about 14711.9686989879. The cubic root of 216442023 is about 600.4090016882.

Adding to 216442023 its reverse (320244612), we get a palindrome (536686635).

The spelling of 216442023 in words is "two hundred sixteen million, four hundred forty-two thousand, twenty-three".