213445132 has 12 divisors (see below), whose sum is σ = 395501400. Its totient is φ = 100444736.

The previous prime is 213445121. The next prime is 213445157. The reversal of 213445132 is 231544312.

It is a junction number, because it is equal to n+sod(n) for n = 213445097 and 213445106.

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, 1569382 + ... + 1569517.

It is an arithmetic number, because the mean of its divisors is an integer number (32958450).

Almost surely, 2^213445132 is an apocalyptic number.

It is an amenable number.

213445132 is a deficient number, since it is larger than the sum of its proper divisors (182056268).

213445132 is a wasteful number, since it uses less digits than its factorization.

213445132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3138920 (or 3138918 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 213445132 is about 14609.7615312503. The cubic root of 213445132 is about 597.6249927870.

Adding to 213445132 its reverse (231544312), we get a palindrome (444989444).

The spelling of 213445132 in words is "two hundred thirteen million, four hundred forty-five thousand, one hundred thirty-two".