203113001303321 has 2 divisors, whose sum is σ = 203113001303322. Its totient is φ = 203113001303320.

The previous prime is 203113001303297. The next prime is 203113001303347. The reversal of 203113001303321 is 123303100311302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203081880462400 + 31120840921 = 14250680^2 + 176411^2 .

It is a cyclic number.

It is not a de Polignac number, because 203113001303321 - 2⁶ = 203113001303257 is a prime.

It is not a weakly prime, because it can be changed into another prime (203113001303021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556500651660 + 101556500651661.

It is an arithmetic number, because the mean of its divisors is an integer number (101556500651661).

Almost surely, 2^{203113001303321} is an apocalyptic number.

It is an amenable number.

203113001303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

203113001303321 is an equidigital number, since it uses as much as digits as its factorization.

203113001303321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 203113001303321 its reverse (123303100311302), we get a palindrome (326416101614623).

The spelling of 203113001303321 in words is "two hundred three trillion, one hundred thirteen billion, one million, three hundred three thousand, three hundred twenty-one".