218432380323 has 8 divisors (see below), whose sum is σ = 291378455568. Its totient is φ = 145553945984.

The previous prime is 218432380307. The next prime is 218432380403. The reversal of 218432380323 is 323083234812.

It is a happy number.

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 218432380323 - 2⁴ = 218432380307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218432380303) 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, 16902690 + ... + 16915607.

It is an arithmetic number, because the mean of its divisors is an integer number (36422306946).

Almost surely, 2^218432380323 is an apocalyptic number.

218432380323 is a deficient number, since it is larger than the sum of its proper divisors (72946075245).

218432380323 is a wasteful number, since it uses less digits than its factorization.

218432380323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33820453.

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 218432380323 in words is "two hundred eighteen billion, four hundred thirty-two million, three hundred eighty thousand, three hundred twenty-three".