213735238 has 4 divisors (see below), whose sum is σ = 320602860. Its totient is φ = 106867618.

The previous prime is 213735233. The next prime is 213735239. The reversal of 213735238 is 832537312.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213735233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53433808 + ... + 53433811.

It is an arithmetic number, because the mean of its divisors is an integer number (80150715).

Almost surely, 2^213735238 is an apocalyptic number.

213735238 is a deficient number, since it is larger than the sum of its proper divisors (106867622).

213735238 is a wasteful number, since it uses less digits than its factorization.

213735238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106867621.

The product of its digits is 30240, while the sum is 34.

The square root of 213735238 is about 14619.6866587489. The cubic root of 213735238 is about 597.8956261279.

The spelling of 213735238 in words is "two hundred thirteen million, seven hundred thirty-five thousand, two hundred thirty-eight".