211009342 has 8 divisors (see below), whose sum is σ = 323874936. Its totient is φ = 103051032.

The previous prime is 211009327. The next prime is 211009349. The reversal of 211009342 is 243900112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211009342² = 89049884822545928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211009349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226713 + ... + 1226884.

It is an arithmetic number, because the mean of its divisors is an integer number (40484367).

Almost surely, 2^211009342 is an apocalyptic number.

211009342 is a deficient number, since it is larger than the sum of its proper divisors (112865594).

211009342 is a wasteful number, since it uses less digits than its factorization.

211009342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453642.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 211009342 is about 14526.1606076761. The cubic root of 211009342 is about 595.3429673010.

Adding to 211009342 its reverse (243900112), we get a palindrome (454909454).

The spelling of 211009342 in words is "two hundred eleven million, nine thousand, three hundred forty-two".