321300040 has 32 divisors (see below), whose sum is σ = 724781880. Its totient is φ = 128189952.

The previous prime is 321300011. The next prime is 321300061. The reversal of 321300040 is 40003123.

It can be written as a sum of positive squares in 4 ways, for example, as 280160644 + 41139396 = 16738^2 + 6414^2 .

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, 5764 + ... + 25996.

Almost surely, 2^321300040 is an apocalyptic number.

It is an amenable number.

321300040 is an abundant number, since it is smaller than the sum of its proper divisors (403481840).

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

321300040 is a wasteful number, since it uses less digits than its factorization.

321300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20641 (or 20637 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 321300040 is about 17924.8442113174. The cubic root of 321300040 is about 684.9153926084.

Adding to 321300040 its reverse (40003123), we get a palindrome (361303163).

The spelling of 321300040 in words is "three hundred twenty-one million, three hundred thousand, forty".