211331342 has 8 divisors (see below), whose sum is σ = 318017232. Its totient is φ = 105325600.

The previous prime is 211331339. The next prime is 211331387. The reversal of 211331342 is 243133112.

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

It is a super-2 number, since 2×211331342² = 89321872223041928, which contains 22 as substring.

It is a congruent number.

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, 169259 + ... + 170502.

It is an arithmetic number, because the mean of its divisors is an integer number (39752154).

Almost surely, 2^211331342 is an apocalyptic number.

211331342 is a deficient number, since it is larger than the sum of its proper divisors (106685890).

211331342 is a wasteful number, since it uses less digits than its factorization.

211331342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340074.

The product of its digits is 432, while the sum is 20.

The square root of 211331342 is about 14537.2398343014. The cubic root of 211331342 is about 595.6456442737.

Adding to 211331342 its reverse (243133112), we get a palindrome (454464454).

The spelling of 211331342 in words is "two hundred eleven million, three hundred thirty-one thousand, three hundred forty-two".