203113121311 has 2 divisors, whose sum is σ = 203113121312. Its totient is φ = 203113121310.

The previous prime is 203113121297. The next prime is 203113121327. The reversal of 203113121311 is 113121311302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203113121311 - 2⁹ = 203113120799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203113121711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101556560655 + 101556560656.

It is an arithmetic number, because the mean of its divisors is an integer number (101556560656).

Almost surely, 2^203113121311 is an apocalyptic number.

203113121311 is a deficient number, since it is larger than the sum of its proper divisors (1).

203113121311 is an equidigital number, since it uses as much as digits as its factorization.

203113121311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 203113121311 its reverse (113121311302), we get a palindrome (316234432613).

The spelling of 203113121311 in words is "two hundred three billion, one hundred thirteen million, one hundred twenty-one thousand, three hundred eleven".