11113031031 has 4 divisors (see below), whose sum is σ = 14817374712. Its totient is φ = 7408687352.

The previous prime is 11113031029. The next prime is 11113031051. The reversal of 11113031031 is 13013031111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13013031111 = 3 ⋅4337677037.

It is a cyclic number.

It is not a de Polignac number, because 11113031031 - 2¹ = 11113031029 is a prime.

It is a super-2 number, since 2×11113031031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11113031031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113031051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1852171836 + ... + 1852171841.

It is an arithmetic number, because the mean of its divisors is an integer number (3704343678).

Almost surely, 2^11113031031 is an apocalyptic number.

11113031031 is a deficient number, since it is larger than the sum of its proper divisors (3704343681).

11113031031 is an equidigital number, since it uses as much as digits as its factorization.

11113031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704343680.

The product of its (nonzero) digits is 27, while the sum is 15.

Adding to 11113031031 its reverse (13013031111), we get a palindrome (24126062142).

The spelling of 11113031031 in words is "eleven billion, one hundred thirteen million, thirty-one thousand, thirty-one".