1131263 has 6 divisors (see below), whose sum is σ = 1316016. Its totient is φ = 969612.

The previous prime is 1131259. The next prime is 1131269. The reversal of 1131263 is 3621311.

It is not a de Polignac number, because 1131263 - 2² = 1131259 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131269) 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, 11495 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (219336).

2^1131263 is an apocalyptic number.

1131263 is a deficient number, since it is larger than the sum of its proper divisors (184753).

1131263 is an equidigital number, since it uses as much as digits as its factorization.

1131263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23101 (or 23094 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 1131263 is about 1063.6084805980. The cubic root of 1131263 is about 104.1968350663.

Adding to 1131263 its reverse (3621311), we get a palindrome (4752574).

The spelling of 1131263 in words is "one million, one hundred thirty-one thousand, two hundred sixty-three".