203141321 has 2 divisors, whose sum is σ = 203141322. Its totient is φ = 203141320.

The previous prime is 203141303. The next prime is 203141333. The reversal of 203141321 is 123141302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153636025 + 49505296 = 12395^2 + 7036^2 .

It is a cyclic number.

It is not a de Polignac number, because 203141321 - 2¹⁰ = 203140297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203141321.

It is not a weakly prime, because it can be changed into another prime (203141371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101570660 + 101570661.

It is an arithmetic number, because the mean of its divisors is an integer number (101570661).

Almost surely, 2^203141321 is an apocalyptic number.

It is an amenable number.

203141321 is a deficient number, since it is larger than the sum of its proper divisors (1).

203141321 is an equidigital number, since it uses as much as digits as its factorization.

203141321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 203141321 is about 14252.7653807954. The cubic root of 203141321 is about 587.8494155633.

Adding to 203141321 its reverse (123141302), we get a palindrome (326282623).

The spelling of 203141321 in words is "two hundred three million, one hundred forty-one thousand, three hundred twenty-one".