321361144 has 16 divisors (see below), whose sum is σ = 648902520. Its totient is φ = 148320480.

The previous prime is 321361121. The next prime is 321361163. The reversal of 321361144 is 441163123.

It is a congruent number.

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, 1544902 + ... + 1545109.

Almost surely, 2^321361144 is an apocalyptic number.

It is an amenable number.

321361144 is an abundant number, since it is smaller than the sum of its proper divisors (327541376).

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

321361144 is a wasteful number, since it uses less digits than its factorization.

321361144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3090030 (or 3090026 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 321361144 is about 17926.5485802482. The cubic root of 321361144 is about 684.9588083281.

The spelling of 321361144 in words is "three hundred twenty-one million, three hundred sixty-one thousand, one hundred forty-four".