1131123 has 16 divisors (see below), whose sum is σ = 1753856. Its totient is φ = 635040.

The previous prime is 1131121. The next prime is 1131131. The reversal of 1131123 is 3211311.

It is not a de Polignac number, because 1131123 - 2¹ = 1131121 is a prime.

It is a super-2 number, since 2×1131123² = 2558878482258, 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 = 1131099 and 1131108.

It is not an unprimeable number, because it can be changed into a prime (1131121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 840 + ... + 1722.

It is an arithmetic number, because the mean of its divisors is an integer number (109616).

2^1131123 is an apocalyptic number.

1131123 is a deficient number, since it is larger than the sum of its proper divisors (622733).

1131123 is an equidigital number, since it uses as much as digits as its factorization.

1131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its digits is 18, while the sum is 12.

The square root of 1131123 is about 1063.5426648706. The cubic root of 1131123 is about 104.1925365791.

Adding to 1131123 its reverse (3211311), we get a palindrome (4342434).

The spelling of 1131123 in words is "one million, one hundred thirty-one thousand, one hundred twenty-three".