213012132 has 24 divisors (see below), whose sum is σ = 499906176. Its totient is φ = 70592928.

The previous prime is 213012109. The next prime is 213012133. The reversal of 213012132 is 231210312.

It is not an unprimeable number, because it can be changed into a prime (213012133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 49228 + ... + 53379.

It is an arithmetic number, because the mean of its divisors is an integer number (20829424).

Almost surely, 2^213012132 is an apocalyptic number.

It is an amenable number.

213012132 is an abundant number, since it is smaller than the sum of its proper divisors (286894044).

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

213012132 is a wasteful number, since it uses less digits than its factorization.

213012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102787 (or 102785 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 213012132 is about 14594.9351488796. The cubic root of 213012132 is about 597.2206003320.

Adding to 213012132 its reverse (231210312), we get a palindrome (444222444).

The spelling of 213012132 in words is "two hundred thirteen million, twelve thousand, one hundred thirty-two".