203121310203341 has 2 divisors, whose sum is σ = 203121310203342. Its totient is φ = 203121310203340.

The previous prime is 203121310203221. The next prime is 203121310203349. The reversal of 203121310203341 is 143302013121302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202938429957316 + 182880246025 = 14245646^2 + 427645^2 .

It is a cyclic number.

It is not a de Polignac number, because 203121310203341 - 2⁴² = 198723263692237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203121310203341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203121310203349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101560655101670 + 101560655101671.

It is an arithmetic number, because the mean of its divisors is an integer number (101560655101671).

Almost surely, 2^{203121310203341} is an apocalyptic number.

It is an amenable number.

203121310203341 is a deficient number, since it is larger than the sum of its proper divisors (1).

203121310203341 is an equidigital number, since it uses as much as digits as its factorization.

203121310203341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 203121310203341 its reverse (143302013121302), we get a palindrome (346423323324643).

The spelling of 203121310203341 in words is "two hundred three trillion, one hundred twenty-one billion, three hundred ten million, two hundred three thousand, three hundred forty-one".