11131032031 has 6 divisors (see below), whose sum is σ = 12948343440. Its totient is φ = 9540884556.

The previous prime is 11131032023. The next prime is 11131032053. The reversal of 11131032031 is 13023013111.

It is not a de Polignac number, because 11131032031 - 2³ = 11131032023 is a prime.

It is a super-2 number, since 2×11131032031² (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 = 11131031996 and 11131032014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131032131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113581911 + ... + 113582008.

It is an arithmetic number, because the mean of its divisors is an integer number (2158057240).

Almost surely, 2^11131032031 is an apocalyptic number.

11131032031 is a deficient number, since it is larger than the sum of its proper divisors (1817311409).

11131032031 is an equidigital number, since it uses as much as digits as its factorization.

11131032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227163933 (or 227163926 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 11131032031 its reverse (13023013111), we get a palindrome (24154045142).

It can be divided in two parts, 111310 and 32031, that added together give a palindrome (143341).

The spelling of 11131032031 in words is "eleven billion, one hundred thirty-one million, thirty-two thousand, thirty-one".