20140331 has 2 divisors, whose sum is σ = 20140332. Its totient is φ = 20140330.

The previous prime is 20140327. The next prime is 20140343. The reversal of 20140331 is 13304102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20140331 - 2² = 20140327 is a prime.

It is a super-2 number, since 2×20140331² = 811265865579122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20140301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070165 + 10070166.

It is an arithmetic number, because the mean of its divisors is an integer number (10070166).

Almost surely, 2^20140331 is an apocalyptic number.

20140331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140331 is an equidigital number, since it uses as much as digits as its factorization.

20140331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20140331 is about 4487.7980123887. The cubic root of 20140331 is about 272.0751441389.

Adding to 20140331 its reverse (13304102), we get a palindrome (33444433).

The spelling of 20140331 in words is "twenty million, one hundred forty thousand, three hundred thirty-one".