211143342 has 32 divisors (see below), whose sum is σ = 427290624. Its totient is φ = 69552000.

The previous prime is 211143323. The next prime is 211143343. The reversal of 211143342 is 243341112.

It is a super-4 number, since 4×211143342⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211143343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305217 + ... + 305907.

It is an arithmetic number, because the mean of its divisors is an integer number (13352832).

Almost surely, 2^211143342 is an apocalyptic number.

211143342 is an abundant number, since it is smaller than the sum of its proper divisors (216147282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211143342 is a wasteful number, since it uses less digits than its factorization.

211143342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224.

The product of its digits is 576, while the sum is 21.

The square root of 211143342 is about 14530.7722437591. The cubic root of 211143342 is about 595.4689634232.

Adding to 211143342 its reverse (243341112), we get a palindrome (454484454).

The spelling of 211143342 in words is "two hundred eleven million, one hundred forty-three thousand, three hundred forty-two".