203541223253 has 2 divisors, whose sum is σ = 203541223254. Its totient is φ = 203541223252.

The previous prime is 203541223229. The next prime is 203541223279. The reversal of 203541223253 is 352322145302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188962351204 + 14578872049 = 434698^2 + 120743^2 .

It is a cyclic number.

It is not a de Polignac number, because 203541223253 - 2²² = 203537028949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203541223553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101770611626 + 101770611627.

It is an arithmetic number, because the mean of its divisors is an integer number (101770611627).

Almost surely, 2^203541223253 is an apocalyptic number.

It is an amenable number.

203541223253 is a deficient number, since it is larger than the sum of its proper divisors (1).

203541223253 is an equidigital number, since it uses as much as digits as its factorization.

203541223253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 203541223253 its reverse (352322145302), we get a palindrome (555863368555).

The spelling of 203541223253 in words is "two hundred three billion, five hundred forty-one million, two hundred twenty-three thousand, two hundred fifty-three".