11201113031 has 2 divisors, whose sum is σ = 11201113032. Its totient is φ = 11201113030.

The previous prime is 11201113019. The next prime is 11201113057. The reversal of 11201113031 is 13031110211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201113031 is a prime.

It is a super-2 number, since 2×11201113031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11201112997 and 11201113015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11201113081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600556515 + 5600556516.

It is an arithmetic number, because the mean of its divisors is an integer number (5600556516).

Almost surely, 2^11201113031 is an apocalyptic number.

11201113031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11201113031 is an equidigital number, since it uses as much as digits as its factorization.

11201113031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11201113031 its reverse (13031110211), we get a palindrome (24232223242).

The spelling of 11201113031 in words is "eleven billion, two hundred one million, one hundred thirteen thousand, thirty-one".