321344442 has 16 divisors (see below), whose sum is σ = 714098880. Its totient is φ = 107114796.

The previous prime is 321344437. The next prime is 321344531. The reversal of 321344442 is 244443123.

It is a happy number.

321344442 is a `hidden beast` number, since 3 + 213 + 4 + 4 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2975358 + ... + 2975465.

It is an arithmetic number, because the mean of its divisors is an integer number (44631180).

Almost surely, 2^321344442 is an apocalyptic number.

321344442 is an abundant number, since it is smaller than the sum of its proper divisors (392754438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321344442 is a wasteful number, since it uses less digits than its factorization.

321344442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950834 (or 5950828 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 321344442 is about 17926.0827288061. The cubic root of 321344442 is about 684.9469417408.

Adding to 321344442 its reverse (244443123), we get a palindrome (565787565).

The spelling of 321344442 in words is "three hundred twenty-one million, three hundred forty-four thousand, four hundred forty-two".