321343144 has 8 divisors (see below), whose sum is σ = 602518410. Its totient is φ = 160671568.

The previous prime is 321343073. The next prime is 321343151. The reversal of 321343144 is 441343123.

It can be written as a sum of positive squares in only one way, i.e., 259532100 + 61811044 = 16110^2 + 7862^2 .

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

It is a super-2 number, since 2×321343144² = 206522832391609472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20083939 + ... + 20083954.

Almost surely, 2^321343144 is an apocalyptic number.

It is an amenable number.

321343144 is a deficient number, since it is larger than the sum of its proper divisors (281175266).

321343144 is a wasteful number, since it uses less digits than its factorization.

321343144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40167899 (or 40167895 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 321343144 is about 17926.0465245408. The cubic root of 321343144 is about 684.9460195088.

Adding to 321343144 its reverse (441343123), we get a palindrome (762686267).

The spelling of 321343144 in words is "three hundred twenty-one million, three hundred forty-three thousand, one hundred forty-four".