213858434 has 4 divisors (see below), whose sum is σ = 320787654. Its totient is φ = 106929216.

The previous prime is 213858427. The next prime is 213858443. The reversal of 213858434 is 434858312.

It is a happy number.

213858434 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 can be written as a sum of positive squares in only one way, i.e., 129163225 + 84695209 = 11365^2 + 9203^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53464607 + ... + 53464610.

Almost surely, 2^213858434 is an apocalyptic number.

213858434 is a deficient number, since it is larger than the sum of its proper divisors (106929220).

213858434 is a wasteful number, since it uses less digits than its factorization.

213858434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106929219.

The product of its digits is 92160, while the sum is 38.

The square root of 213858434 is about 14623.8994115797. The cubic root of 213858434 is about 598.0104788192.

The spelling of 213858434 in words is "two hundred thirteen million, eight hundred fifty-eight thousand, four hundred thirty-four".