2140231321 has 2 divisors, whose sum is σ = 2140231322. Its totient is φ = 2140231320.

The previous prime is 2140231297. The next prime is 2140231361. The reversal of 2140231321 is 1231320412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1978025625 + 162205696 = 44475^2 + 12736^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140231321 - 2⁹ = 2140230809 is a prime.

It is not a weakly prime, because it can be changed into another prime (2140231361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070115660 + 1070115661.

It is an arithmetic number, because the mean of its divisors is an integer number (1070115661).

Almost surely, 2^2140231321 is an apocalyptic number.

It is an amenable number.

2140231321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140231321 is an equidigital number, since it uses as much as digits as its factorization.

2140231321 is an evil number, because the sum of its binary digits is even.

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

The square root of 2140231321 is about 46262.6341770548. The cubic root of 2140231321 is about 1288.7051729298.

Adding to 2140231321 its reverse (1231320412), we get a palindrome (3371551733).

The spelling of 2140231321 in words is "two billion, one hundred forty million, two hundred thirty-one thousand, three hundred twenty-one".