213623118 has 48 divisors (see below), whose sum is σ = 488451600. Its totient is φ = 67288320.

The previous prime is 213623063. The next prime is 213623119. The reversal of 213623118 is 811326312.

It is a happy number.

213623118 is a `hidden beast` number, since 21 + 3 + 623 + 1 + 18 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 213623091 and 213623100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213623119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242038 + ... + 242918.

It is an arithmetic number, because the mean of its divisors is an integer number (10176075).

Almost surely, 2^213623118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213623118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244225800).

213623118 is an abundant number, since it is smaller than the sum of its proper divisors (274828482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213623118 is a wasteful number, since it uses less digits than its factorization.

213623118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617 (or 1614 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 213623118 is about 14615.8516002319. The cubic root of 213623118 is about 597.7910609605.

The spelling of 213623118 in words is "two hundred thirteen million, six hundred twenty-three thousand, one hundred eighteen".