211042344 has 16 divisors (see below), whose sum is σ = 527605920. Its totient is φ = 70347440.

The previous prime is 211042297. The next prime is 211042387. The reversal of 211042344 is 443240112.

It is a super-2 number, since 2×211042344² = 89077741922028672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211042344.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396692 + ... + 4396739.

It is an arithmetic number, because the mean of its divisors is an integer number (32975370).

Almost surely, 2^211042344 is an apocalyptic number.

211042344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

211042344 is an abundant number, since it is smaller than the sum of its proper divisors (316563576).

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

211042344 is a wasteful number, since it uses less digits than its factorization.

211042344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8793440 (or 8793436 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 211042344 is about 14527.2965138046. The cubic root of 211042344 is about 595.3740030271.

Adding to 211042344 its reverse (443240112), we get a palindrome (654282456).

The spelling of 211042344 in words is "two hundred eleven million, forty-two thousand, three hundred forty-four".