213130838 has 4 divisors (see below), whose sum is σ = 319696260. Its totient is φ = 106565418.

The previous prime is 213130817. The next prime is 213130849. The reversal of 213130838 is 838031312.

213130838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213130838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53282708 + ... + 53282711.

It is an arithmetic number, because the mean of its divisors is an integer number (79924065).

Almost surely, 2^213130838 is an apocalyptic number.

213130838 is a deficient number, since it is larger than the sum of its proper divisors (106565422).

213130838 is a wasteful number, since it uses less digits than its factorization.

213130838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106565421.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 213130838 is about 14599.0012672100. The cubic root of 213130838 is about 597.3315181201.

The spelling of 213130838 in words is "two hundred thirteen million, one hundred thirty thousand, eight hundred thirty-eight".