213422344 has 8 divisors (see below), whose sum is σ = 400166910. Its totient is φ = 106711168.

The previous prime is 213422329. The next prime is 213422351. The reversal of 213422344 is 443224312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121837444 + 91584900 = 11038^2 + 9570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13338889 + ... + 13338904.

Almost surely, 2^213422344 is an apocalyptic number.

It is an amenable number.

213422344 is a deficient number, since it is larger than the sum of its proper divisors (186744566).

213422344 is a wasteful number, since it uses less digits than its factorization.

213422344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26677799 (or 26677795 counting only the distinct ones).

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

The square root of 213422344 is about 14608.9816209071. The cubic root of 213422344 is about 597.6037239908.

Adding to 213422344 its reverse (443224312), we get a palindrome (656646656).

The spelling of 213422344 in words is "two hundred thirteen million, four hundred twenty-two thousand, three hundred forty-four".