1130731 has 8 divisors (see below), whose sum is σ = 1301504. Its totient is φ = 962280.

The previous prime is 1130719. The next prime is 1130737. The reversal of 1130731 is 1370311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1130731 - 2⁵ = 1130699 is a prime.

It is a super-2 number, since 2×1130731² = 2557105188722, which contains 22 as substring.

It is a Duffinian number.

1130731 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1130737) 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, 646 + ... + 1636.

It is an arithmetic number, because the mean of its divisors is an integer number (162688).

2^1130731 is an apocalyptic number.

1130731 is a deficient number, since it is larger than the sum of its proper divisors (170773).

1130731 is an equidigital number, since it uses as much as digits as its factorization.

1130731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

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

The square root of 1130731 is about 1063.3583591621. The cubic root of 1130731 is about 104.1804989276.

The spelling of 1130731 in words is "one million, one hundred thirty thousand, seven hundred thirty-one".