203013111113 has 2 divisors, whose sum is σ = 203013111114. Its totient is φ = 203013111112.

The previous prime is 203013111109. The next prime is 203013111139. The reversal of 203013111113 is 311111310302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200643076624 + 2370034489 = 447932^2 + 48683^2 .

It is a cyclic number.

It is not a de Polignac number, because 203013111113 - 2² = 203013111109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 203013111091 and 203013111100.

It is not a weakly prime, because it can be changed into another prime (203013111193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101506555556 + 101506555557.

It is an arithmetic number, because the mean of its divisors is an integer number (101506555557).

Almost surely, 2^203013111113 is an apocalyptic number.

It is an amenable number.

203013111113 is a deficient number, since it is larger than the sum of its proper divisors (1).

203013111113 is an equidigital number, since it uses as much as digits as its factorization.

203013111113 is an evil number, because the sum of its binary digits is even.

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

Adding to 203013111113 its reverse (311111310302), we get a palindrome (514124421415).

The spelling of 203013111113 in words is "two hundred three billion, thirteen million, one hundred eleven thousand, one hundred thirteen".