203223332261 has 2 divisors, whose sum is σ = 203223332262. Its totient is φ = 203223332260.

The previous prime is 203223332233. The next prime is 203223332293. The reversal of 203223332261 is 162233322302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197486027236 + 5737305025 = 444394^2 + 75745^2 .

It is a cyclic number.

It is not a de Polignac number, because 203223332261 - 2³⁰ = 202149590437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203223332761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101611666130 + 101611666131.

It is an arithmetic number, because the mean of its divisors is an integer number (101611666131).

Almost surely, 2^203223332261 is an apocalyptic number.

It is an amenable number.

203223332261 is a deficient number, since it is larger than the sum of its proper divisors (1).

203223332261 is an equidigital number, since it uses as much as digits as its factorization.

203223332261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 203223332261 its reverse (162233322302), we get a palindrome (365456654563).

The spelling of 203223332261 in words is "two hundred three billion, two hundred twenty-three million, three hundred thirty-two thousand, two hundred sixty-one".