321413140 has 24 divisors (see below), whose sum is σ = 676315080. Its totient is φ = 128308608.

The previous prime is 321413123. The next prime is 321413143. The reversal of 321413140 is 41314123.

It can be written as a sum of positive squares in 4 ways, for example, as 63425296 + 257987844 = 7964^2 + 16062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321413143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5607 + ... + 25966.

It is an arithmetic number, because the mean of its divisors is an integer number (28179795).

Almost surely, 2^321413140 is an apocalyptic number.

It is an amenable number.

321413140 is an abundant number, since it is smaller than the sum of its proper divisors (354901940).

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

321413140 is a wasteful number, since it uses less digits than its factorization.

321413140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32091 (or 32089 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 321413140 is about 17927.9987728692. The cubic root of 321413140 is about 684.9957482820.

Adding to 321413140 its reverse (41314123), we get a palindrome (362727263).

The spelling of 321413140 in words is "three hundred twenty-one million, four hundred thirteen thousand, one hundred forty".