1131473 has 4 divisors (see below), whose sum is σ = 1293120. Its totient is φ = 969828.

The previous prime is 1131467. The next prime is 1131479. The reversal of 1131473 is 3741311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3741311 = 7 ⋅534473.

It is an interprime number because it is at equal distance from previous prime (1131467) and next prime (1131479).

It is a cyclic number.

It is not a de Polignac number, because 1131473 - 2⁸ = 1131217 is a prime.

It is a super-2 number, since 2×1131473² = 2560462299458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131479) 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, 80813 + ... + 80826.

It is an arithmetic number, because the mean of its divisors is an integer number (323280).

2^1131473 is an apocalyptic number.

It is an amenable number.

1131473 is a deficient number, since it is larger than the sum of its proper divisors (161647).

1131473 is an equidigital number, since it uses as much as digits as its factorization.

1131473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161646.

The product of its digits is 252, while the sum is 20.

The square root of 1131473 is about 1063.7071965536. The cubic root of 1131473 is about 104.2032821323.

Adding to 1131473 its reverse (3741311), we get a palindrome (4872784).

The spelling of 1131473 in words is "one million, one hundred thirty-one thousand, four hundred seventy-three".