213534458 has 4 divisors (see below), whose sum is σ = 320301690. Its totient is φ = 106767228.

The previous prime is 213534457. The next prime is 213534463. The reversal of 213534458 is 854435312.

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

It can be written as a sum of positive squares in only one way, i.e., 115068529 + 98465929 = 10727^2 + 9923^2 .

It is not an unprimeable number, because it can be changed into a prime (213534457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53383613 + ... + 53383616.

Almost surely, 2^213534458 is an apocalyptic number.

213534458 is a deficient number, since it is larger than the sum of its proper divisors (106767232).

213534458 is a wasteful number, since it uses less digits than its factorization.

213534458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106767231.

The product of its digits is 57600, while the sum is 35.

The square root of 213534458 is about 14612.8182771155. The cubic root of 213534458 is about 597.7083491112.

The spelling of 213534458 in words is "two hundred thirteen million, five hundred thirty-four thousand, four hundred fifty-eight".