203111241011117 has 2 divisors, whose sum is σ = 203111241011118. Its totient is φ = 203111241011116.

The previous prime is 203111241011099. The next prime is 203111241011141. The reversal of 203111241011117 is 711110142111302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170893027631236 + 32218213379881 = 13072606^2 + 5676109^2 .

It is a cyclic number.

It is not a de Polignac number, because 203111241011117 - 2²⁴ = 203111224233901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203111241091117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101555620505558 + 101555620505559.

It is an arithmetic number, because the mean of its divisors is an integer number (101555620505559).

Almost surely, 2^{203111241011117} is an apocalyptic number.

It is an amenable number.

203111241011117 is a deficient number, since it is larger than the sum of its proper divisors (1).

203111241011117 is an equidigital number, since it uses as much as digits as its factorization.

203111241011117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 26.

Adding to 203111241011117 its reverse (711110142111302), we get a palindrome (914221383122419).

The spelling of 203111241011117 in words is "two hundred three trillion, one hundred eleven billion, two hundred forty-one million, eleven thousand, one hundred seventeen".