1131567 has 8 divisors (see below), whose sum is σ = 1514496. Its totient is φ = 751512.

The previous prime is 1131553. The next prime is 1131569. The reversal of 1131567 is 7651311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1131567 - 2¹¹ = 1129519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131569) 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, 498 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (189312).

2^1131567 is an apocalyptic number.

1131567 is a deficient number, since it is larger than the sum of its proper divisors (382929).

1131567 is a wasteful number, since it uses less digits than its factorization.

1131567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437.

The product of its digits is 630, while the sum is 24.

The square root of 1131567 is about 1063.7513807277. The cubic root of 1131567 is about 104.2061677034.

Adding to 1131567 its reverse (7651311), we get a palindrome (8782878).

The spelling of 1131567 in words is "one million, one hundred thirty-one thousand, five hundred sixty-seven".