218135324 has 24 divisors (see below), whose sum is σ = 418278000. Its totient is φ = 98714880.

The previous prime is 218135311. The next prime is 218135339. The reversal of 218135324 is 423531812.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749 + ... + 20900.

It is an arithmetic number, because the mean of its divisors is an integer number (17428250).

Almost surely, 2^218135324 is an apocalyptic number.

It is an amenable number.

218135324 is a deficient number, since it is larger than the sum of its proper divisors (200142676).

218135324 is a wasteful number, since it uses less digits than its factorization.

218135324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21893 (or 21891 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 218135324 is about 14769.4049981711. The cubic root of 218135324 is about 601.9706721841.

The spelling of 218135324 in words is "two hundred eighteen million, one hundred thirty-five thousand, three hundred twenty-four".