213244342 has 16 divisors (see below), whose sum is σ = 322274160. Its totient is φ = 105823008.

The previous prime is 213244331. The next prime is 213244351. The reversal of 213244342 is 243442312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213388 + ... + 214384.

It is an arithmetic number, because the mean of its divisors is an integer number (20142135).

Almost surely, 2^213244342 is an apocalyptic number.

213244342 is a deficient number, since it is larger than the sum of its proper divisors (109029818).

213244342 is a wasteful number, since it uses less digits than its factorization.

213244342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its digits is 4608, while the sum is 25.

The square root of 213244342 is about 14602.8881389950. Note that the first 3 decimals coincide. The cubic root of 213244342 is about 597.4375366972.

Adding to 213244342 its reverse (243442312), we get a palindrome (456686654).

The spelling of 213244342 in words is "two hundred thirteen million, two hundred forty-four thousand, three hundred forty-two".