11111103031311 has 16 divisors (see below), whose sum is σ = 16501140079200. Its totient is φ = 7389291006144.

The previous prime is 11111103031283. The next prime is 11111103031339. The reversal of 11111103031311 is 11313030111111.

It is an interprime number because it is at equal distance from previous prime (11111103031283) and next prime (11111103031339).

It is not a de Polignac number, because 11111103031311 - 2⁵ = 11111103031279 is a prime.

It is a super-2 number, since 2×11111103031311² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111103031111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503072496 + ... + 503094581.

It is an arithmetic number, because the mean of its divisors is an integer number (1031321254950).

Almost surely, 2^{11111103031311} is an apocalyptic number.

11111103031311 is a deficient number, since it is larger than the sum of its proper divisors (5390037047889).

11111103031311 is a wasteful number, since it uses less digits than its factorization.

11111103031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006167495 (or 1006167489 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 18.

Adding to 11111103031311 its reverse (11313030111111), we get a palindrome (22424133142422).

The spelling of 11111103031311 in words is "eleven trillion, one hundred eleven billion, one hundred three million, thirty-one thousand, three hundred eleven".