203103111131 has 2 divisors, whose sum is σ = 203103111132. Its totient is φ = 203103111130.

The previous prime is 203103111077. The next prime is 203103111137. The reversal of 203103111131 is 131111301302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203103111131 - 2⁶ = 203103111067 is a prime.

It is a super-2 number, since 2×203103111131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203103111137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101551555565 + 101551555566.

It is an arithmetic number, because the mean of its divisors is an integer number (101551555566).

Almost surely, 2^203103111131 is an apocalyptic number.

203103111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

203103111131 is an equidigital number, since it uses as much as digits as its factorization.

203103111131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 203103111131 its reverse (131111301302), we get a palindrome (334214412433).

The spelling of 203103111131 in words is "two hundred three billion, one hundred three million, one hundred eleven thousand, one hundred thirty-one".