1131031031 has 8 divisors (see below), whose sum is σ = 1282140720. Its totient is φ = 989079552.

The previous prime is 1131031019. The next prime is 1131031051. The reversal of 1131031031 is 1301301311.

It is a happy number.

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 1131031031 - 2²² = 1126836727 is a prime.

It is a super-2 number, since 2×1131031031² = 2558462386169845922, 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 = 1131030997 and 1131031015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131031051) 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 7 ways as a sum of consecutive naturals, for example, 2289290 + ... + 2289783.

It is an arithmetic number, because the mean of its divisors is an integer number (160267590).

Almost surely, 2^1131031031 is an apocalyptic number.

1131031031 is a deficient number, since it is larger than the sum of its proper divisors (151109689).

1131031031 is a wasteful number, since it uses less digits than its factorization.

1131031031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579105.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1131031031 is about 33630.8047926302. The cubic root of 1131031031 is about 1041.8971261768.

Adding to 1131031031 its reverse (1301301311), we get a palindrome (2432332342).

The spelling of 1131031031 in words is "one billion, one hundred thirty-one million, thirty-one thousand, thirty-one".