1131073 has 4 divisors (see below), whose sum is σ = 1152468. Its totient is φ = 1109680.

The previous prime is 1131049. The next prime is 1131077. The reversal of 1131073 is 3701311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3701311 = 43 ⋅86077.

It can be written as a sum of positive squares in 2 ways, for example, as 1024144 + 106929 = 1012^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131073 - 2⁹ = 1130561 is a prime.

It is a super-2 number, since 2×1131073² = 2558652262658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10618 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (288117).

2^1131073 is an apocalyptic number.

It is an amenable number.

1131073 is a deficient number, since it is larger than the sum of its proper divisors (21395).

1131073 is an equidigital number, since it uses as much as digits as its factorization.

1131073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21394.

The product of its (nonzero) digits is 63, while the sum is 16.

The square root of 1131073 is about 1063.5191582666. The cubic root of 1131073 is about 104.1910013191.

Adding to 1131073 its reverse (3701311), we get a palindrome (4832384).

The spelling of 1131073 in words is "one million, one hundred thirty-one thousand, seventy-three".