1131031 has 8 divisors (see below), whose sum is σ = 1242000. Its totient is φ = 1021440.

The previous prime is 1131023. The next prime is 1131047. The reversal of 1131031 is 1301311.

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 1131031 - 2³ = 1131023 is a prime.

It is a super-2 number, since 2×1131031² = 2558462245922, 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 = 1130999 and 1131017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131131) 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, 2295 + ... + 2743.

It is an arithmetic number, because the mean of its divisors is an integer number (155250).

2^1131031 is an apocalyptic number.

1131031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131031 is a deficient number, since it is larger than the sum of its proper divisors (110969).

1131031 is a wasteful number, since it uses less digits than its factorization.

1131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689.

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

The square root of 1131031 is about 1063.4994123177. The cubic root of 1131031 is about 104.1897116658.

Adding to 1131031 its reverse (1301311), we get a palindrome (2432342).

The spelling of 1131031 in words is "one million, one hundred thirty-one thousand, thirty-one".