11112223031 has 24 divisors (see below), whose sum is σ = 13843021824. Its totient is φ = 8733722400.

The previous prime is 11112222997. The next prime is 11112223039. The reversal of 11112223031 is 13032221111.

11112223031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11112223031 - 2¹⁸ = 11111960887 is a prime.

It is a super-2 number, since 2×11112223031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112223039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147530 + ... + 209736.

It is an arithmetic number, because the mean of its divisors is an integer number (576792576).

Almost surely, 2^11112223031 is an apocalyptic number.

11112223031 is a deficient number, since it is larger than the sum of its proper divisors (2730798793).

11112223031 is a wasteful number, since it uses less digits than its factorization.

11112223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62391 (or 62378 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11112223031 its reverse (13032221111), we get a palindrome (24144444142).

The spelling of 11112223031 in words is "eleven billion, one hundred twelve million, two hundred twenty-three thousand, thirty-one".