211344142 has 4 divisors (see below), whose sum is σ = 317016216. Its totient is φ = 105672070.

The previous prime is 211344127. The next prime is 211344151. The reversal of 211344142 is 241443112.

It is a happy number.

211344142 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 is a super-3 number, since 3×211344142³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52836034 + ... + 52836037.

It is an arithmetic number, because the mean of its divisors is an integer number (79254054).

Almost surely, 2^211344142 is an apocalyptic number.

211344142 is a deficient number, since it is larger than the sum of its proper divisors (105672074).

211344142 is a wasteful number, since it uses less digits than its factorization.

211344142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105672073.

The product of its digits is 768, while the sum is 22.

The square root of 211344142 is about 14537.6800762708. The cubic root of 211344142 is about 595.6576697976.

Adding to 211344142 its reverse (241443112), we get a palindrome (452787254).

The spelling of 211344142 in words is "two hundred eleven million, three hundred forty-four thousand, one hundred forty-two".