11031031 has 4 divisors (see below), whose sum is σ = 12033864. Its totient is φ = 10028200.

The previous prime is 11031023. The next prime is 11031047. The reversal of 11031031 is 13013011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11031031 - 2³ = 11031023 is a prime.

It is a super-2 number, since 2×11031031² = 243367289845922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11030999 and 11031017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501400 + ... + 501421.

It is an arithmetic number, because the mean of its divisors is an integer number (3008466).

Almost surely, 2^11031031 is an apocalyptic number.

11031031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11031031 is a deficient number, since it is larger than the sum of its proper divisors (1002833).

11031031 is a wasteful number, since it uses less digits than its factorization.

11031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002832.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 11031031 is about 3321.2995950381. The cubic root of 11031031 is about 222.6069409755.

Adding to 11031031 its reverse (13013011), we get a palindrome (24044042).

The spelling of 11031031 in words is "eleven million, thirty-one thousand, thirty-one".