20140321 has 8 divisors (see below), whose sum is σ = 20783720. Its totient is φ = 19502208.

The previous prime is 20140303. The next prime is 20140327. The reversal of 20140321 is 12304102.

It can be written as a sum of positive squares in 4 ways, for example, as 10923025 + 9217296 = 3305^2 + 3036^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20140321 - 2¹¹ = 20138273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20140327) 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, 7285 + ... + 9661.

It is an arithmetic number, because the mean of its divisors is an integer number (2597965).

Almost surely, 2^20140321 is an apocalyptic number.

It is an amenable number.

20140321 is a deficient number, since it is larger than the sum of its proper divisors (643399).

20140321 is a wasteful number, since it uses less digits than its factorization.

20140321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20140321 is about 4487.7968982564. The cubic root of 20140321 is about 272.0750991090.

Adding to 20140321 its reverse (12304102), we get a palindrome (32444423).

The spelling of 20140321 in words is "twenty million, one hundred forty thousand, three hundred twenty-one".