321222340 has 48 divisors (see below), whose sum is σ = 688799664. Its totient is φ = 125798400.

The previous prime is 321222323. The next prime is 321222353. The reversal of 321222340 is 43222123.

It can be written as a sum of positive squares in 8 ways, for example, as 90668484 + 230553856 = 9522^2 + 15184^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342352 + ... + 343288.

It is an arithmetic number, because the mean of its divisors is an integer number (14349993).

Almost surely, 2^321222340 is an apocalyptic number.

It is an amenable number.

321222340 is an abundant number, since it is smaller than the sum of its proper divisors (367577324).

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

321222340 is a wasteful number, since it uses less digits than its factorization.

321222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 1286 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 321222340 is about 17922.6766974133. The cubic root of 321222340 is about 684.8601771194.

Adding to 321222340 its reverse (43222123), we get a palindrome (364444463).

It can be divided in two parts, 3212 and 22340, that added together give a palindrome (25552).

The spelling of 321222340 in words is "three hundred twenty-one million, two hundred twenty-two thousand, three hundred forty".