213311344 has 20 divisors (see below), whose sum is σ = 413857440. Its totient is φ = 106509440.

The previous prime is 213311323. The next prime is 213311353. The reversal of 213311344 is 443113312.

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 3 ways as a sum of consecutive naturals, for example, 3417 + ... + 20935.

It is an arithmetic number, because the mean of its divisors is an integer number (20692872).

Almost surely, 2^213311344 is an apocalyptic number.

It is an amenable number.

213311344 is a deficient number, since it is larger than the sum of its proper divisors (200546096).

213311344 is a wasteful number, since it uses less digits than its factorization.

213311344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18288 (or 18282 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 213311344 is about 14605.1820940377. The cubic root of 213311344 is about 597.5001023558.

Adding to 213311344 its reverse (443113312), we get a palindrome (656424656).

The spelling of 213311344 in words is "two hundred thirteen million, three hundred eleven thousand, three hundred forty-four".