213247132 has 24 divisors (see below), whose sum is σ = 438023264. Its totient is φ = 88921152.

The previous prime is 213247129. The next prime is 213247147. The reversal of 213247132 is 231742312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 213247097 and 213247106.

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, 101883 + ... + 103954.

Almost surely, 2^213247132 is an apocalyptic number.

It is an amenable number.

213247132 is an abundant number, since it is smaller than the sum of its proper divisors (224776132).

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

213247132 is a wasteful number, since it uses less digits than its factorization.

213247132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205885 (or 205883 counting only the distinct ones).

The product of its digits is 2016, while the sum is 25.

The square root of 213247132 is about 14602.9836677304. The cubic root of 213247132 is about 597.4401422270.

Adding to 213247132 its reverse (231742312), we get a palindrome (444989444).

The spelling of 213247132 in words is "two hundred thirteen million, two hundred forty-seven thousand, one hundred thirty-two".