213112234 has 4 divisors (see below), whose sum is σ = 319668354. Its totient is φ = 106556116.

The previous prime is 213112177. The next prime is 213112247. The reversal of 213112234 is 432211312.

It is a happy number.

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., 208889209 + 4223025 = 14453^2 + 2055^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53278057 + ... + 53278060.

Almost surely, 2^213112234 is an apocalyptic number.

213112234 is a deficient number, since it is larger than the sum of its proper divisors (106556120).

213112234 is a wasteful number, since it uses less digits than its factorization.

213112234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106556119.

The product of its digits is 288, while the sum is 19.

The square root of 213112234 is about 14598.3640864311. The cubic root of 213112234 is about 597.3141374366.

Adding to 213112234 its reverse (432211312), we get a palindrome (645323546).

It can be divided in two parts, 2131 and 12234, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 213112234 in words is "two hundred thirteen million, one hundred twelve thousand, two hundred thirty-four".