11131111031 has 8 divisors (see below), whose sum is σ = 11781697200. Its totient is φ = 10486998720.

The previous prime is 11131110983. The next prime is 11131111037. The reversal of 11131111031 is 13011113111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11131111031 - 2⁶ = 11131110967 is a prime.

It is a super-2 number, since 2×11131111031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11131110997 and 11131111015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131111037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1614926 + ... + 1621803.

It is an arithmetic number, because the mean of its divisors is an integer number (1472712150).

Almost surely, 2^11131111031 is an apocalyptic number.

11131111031 is a deficient number, since it is larger than the sum of its proper divisors (650586169).

11131111031 is a wasteful number, since it uses less digits than its factorization.

11131111031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236929.

The product of its (nonzero) digits is 9, while the sum is 14.

Adding to 11131111031 its reverse (13011113111), we get a palindrome (24142224142).

The spelling of 11131111031 in words is "eleven billion, one hundred thirty-one million, one hundred eleven thousand, thirty-one".