213242036 has 24 divisors (see below), whose sum is σ = 426793920. Its totient is φ = 91323072.

The previous prime is 213242027. The next prime is 213242077. The reversal of 213242036 is 630242312.

213242036 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 70736 + ... + 73688.

It is an arithmetic number, because the mean of its divisors is an integer number (17783080).

Almost surely, 2^213242036 is an apocalyptic number.

It is an amenable number.

213242036 is an abundant number, since it is smaller than the sum of its proper divisors (213551884).

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

213242036 is a wasteful number, since it uses less digits than its factorization.

213242036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 213242036 is about 14602.8091817979. The cubic root of 213242036 is about 597.4353831490.

Adding to 213242036 its reverse (630242312), we get a palindrome (843484348).

The spelling of 213242036 in words is "two hundred thirteen million, two hundred forty-two thousand, thirty-six".