11110312031 has 16 divisors (see below), whose sum is σ = 13743664704. Its totient is φ = 8745940224.

The previous prime is 11110312009. The next prime is 11110312033. The reversal of 11110312031 is 13021301111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11110312031 is a prime.

It is a super-2 number, since 2×11110312031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11110311997 and 11110312015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110312033) 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 15 ways as a sum of consecutive naturals, for example, 291950 + ... + 327803.

It is an arithmetic number, because the mean of its divisors is an integer number (858979044).

Almost surely, 2^11110312031 is an apocalyptic number.

11110312031 is a deficient number, since it is larger than the sum of its proper divisors (2633352673).

11110312031 is a wasteful number, since it uses less digits than its factorization.

11110312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619970.

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

Adding to 11110312031 its reverse (13021301111), we get a palindrome (24131613142).

The spelling of 11110312031 in words is "eleven billion, one hundred ten million, three hundred twelve thousand, thirty-one".