213158238 has 16 divisors (see below), whose sum is σ = 428180880. Its totient is φ = 70742016.

The previous prime is 213158237. The next prime is 213158243. The reversal of 213158238 is 832851312.

213158238 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213158199 and 213158208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213158233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76195 + ... + 78942.

It is an arithmetic number, because the mean of its divisors is an integer number (26761305).

Almost surely, 2^213158238 is an apocalyptic number.

213158238 is an abundant number, since it is smaller than the sum of its proper divisors (215022642).

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

213158238 is a wasteful number, since it uses less digits than its factorization.

213158238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155371.

The product of its digits is 11520, while the sum is 33.

The square root of 213158238 is about 14599.9396574095. The cubic root of 213158238 is about 597.3571145760.

The spelling of 213158238 in words is "two hundred thirteen million, one hundred fifty-eight thousand, two hundred thirty-eight".