201111243310031 has 2 divisors, whose sum is σ = 201111243310032. Its totient is φ = 201111243310030.

The previous prime is 201111243309917. The next prime is 201111243310049. The reversal of 201111243310031 is 130013342111102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201111243310031 - 2¹⁸ = 201111243047887 is a prime.

It is a super-2 number, since 2×201111243310031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201111243309979 and 201111243310006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201111243330031) 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, 100555621655015 + 100555621655016.

It is an arithmetic number, because the mean of its divisors is an integer number (100555621655016).

Almost surely, 2^{201111243310031} is an apocalyptic number.

201111243310031 is a deficient number, since it is larger than the sum of its proper divisors (1).

201111243310031 is an equidigital number, since it uses as much as digits as its factorization.

201111243310031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 201111243310031 its reverse (130013342111102), we get a palindrome (331124585421133).

The spelling of 201111243310031 in words is "two hundred one trillion, one hundred eleven billion, two hundred forty-three million, three hundred ten thousand, thirty-one".