111031013 has 4 divisors (see below), whose sum is σ = 112109088. Its totient is φ = 109952940.

The previous prime is 111030989. The next prime is 111031021. The reversal of 111031013 is 310130111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111031013 - 2⁶ = 111030949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111030985 and 111031003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111031033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538883 + ... + 539088.

It is an arithmetic number, because the mean of its divisors is an integer number (28027272).

Almost surely, 2^111031013 is an apocalyptic number.

It is an amenable number.

111031013 is a deficient number, since it is larger than the sum of its proper divisors (1078075).

111031013 is a wasteful number, since it uses less digits than its factorization.

111031013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078074.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 111031013 is about 10537.1254619085. The cubic root of 111031013 is about 480.6343075325.

Adding to 111031013 its reverse (310130111), we get a palindrome (421161124).

It can be divided in two parts, 1110 and 31013, that added together give a palindrome (32123).

The spelling of 111031013 in words is "one hundred eleven million, thirty-one thousand, thirteen".