11111130031 has 2 divisors, whose sum is σ = 11111130032. Its totient is φ = 11111130030.

The previous prime is 11111130029. The next prime is 11111130067. The reversal of 11111130031 is 13003111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111130031 - 2¹ = 11111130029 is a prime.

It is a super-2 number, since 2×11111130031² (a number of 21 digits) contains 22 as substring.

Together with 11111130029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11111129993 and 11111130020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111130931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555565015 + 5555565016.

It is an arithmetic number, because the mean of its divisors is an integer number (5555565016).

Almost surely, 2^11111130031 is an apocalyptic number.

11111130031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111130031 is an equidigital number, since it uses as much as digits as its factorization.

11111130031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 11111130031 its reverse (13003111111), we get a palindrome (24114241142).

It can be divided in two parts, 11111 and 130031, that multiplied together give a palindrome (1444774441).

The spelling of 11111130031 in words is "eleven billion, one hundred eleven million, one hundred thirty thousand, thirty-one".