216080023 has 4 divisors (see below), whose sum is σ = 216703080. Its totient is φ = 215456968.

The previous prime is 216080021. The next prime is 216080057. The reversal of 216080023 is 320080612.

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 216080023 - 2¹ = 216080021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216079976 and 216080003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216080021) 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, 311008 + ... + 311701.

It is an arithmetic number, because the mean of its divisors is an integer number (54175770).

Almost surely, 2^216080023 is an apocalyptic number.

216080023 is a deficient number, since it is larger than the sum of its proper divisors (623057).

216080023 is an equidigital number, since it uses as much as digits as its factorization.

216080023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623056.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 216080023 is about 14699.6606423414. The cubic root of 216080023 is about 600.0740862220.

The spelling of 216080023 in words is "two hundred sixteen million, eighty thousand, twenty-three".