213331136 has 28 divisors (see below), whose sum is σ = 424586400. Its totient is φ = 106348800.

The previous prime is 213331109. The next prime is 213331169. The reversal of 213331136 is 631133312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17561 + ... + 27111.

It is an arithmetic number, because the mean of its divisors is an integer number (15163800).

Almost surely, 2^213331136 is an apocalyptic number.

It is an amenable number.

213331136 is a deficient number, since it is larger than the sum of its proper divisors (211255264).

213331136 is an equidigital number, since it uses as much as digits as its factorization.

213331136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9912 (or 9902 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

The square root of 213331136 is about 14605.8596460462. The cubic root of 213331136 is about 597.5185813797.

Adding to 213331136 its reverse (631133312), we get a palindrome (844464448).

The spelling of 213331136 in words is "two hundred thirteen million, three hundred thirty-one thousand, one hundred thirty-six".