321344402 has 8 divisors (see below), whose sum is σ = 482180412. Its totient is φ = 160617600.

The previous prime is 321344381. The next prime is 321344423. The reversal of 321344402 is 204443123.

It is an interprime number because it is at equal distance from previous prime (321344381) and next prime (321344423).

It can be written as a sum of positive squares in 2 ways, for example, as 240901441 + 80442961 = 15521^2 + 8969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19499 + ... + 31982.

Almost surely, 2^321344402 is an apocalyptic number.

321344402 is a deficient number, since it is larger than the sum of its proper divisors (160836010).

321344402 is a wasteful number, since it uses less digits than its factorization.

321344402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54604.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 321344402 is about 17926.0816131133. The cubic root of 321344402 is about 684.9469133207.

Adding to 321344402 its reverse (204443123), we get a palindrome (525787525).

The spelling of 321344402 in words is "three hundred twenty-one million, three hundred forty-four thousand, four hundred two".