218314423 has 4 divisors (see below), whose sum is σ = 218427048. Its totient is φ = 218201800.

The previous prime is 218314379. The next prime is 218314451. The reversal of 218314423 is 324413812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218314423 is a prime.

It is a super-2 number, since 2×218314423² = 95322374579645858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218314391 and 218314400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228314423) 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, 53353 + ... + 57298.

It is an arithmetic number, because the mean of its divisors is an integer number (54606762).

Almost surely, 2^218314423 is an apocalyptic number.

218314423 is a deficient number, since it is larger than the sum of its proper divisors (112625).

218314423 is a wasteful number, since it uses less digits than its factorization.

218314423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112624.

The product of its digits is 4608, while the sum is 28.

The square root of 218314423 is about 14775.4669300161. The cubic root of 218314423 is about 602.1353755292.

The spelling of 218314423 in words is "two hundred eighteen million, three hundred fourteen thousand, four hundred twenty-three".