1080731 has 4 divisors (see below), whose sum is σ = 1087152. Its totient is φ = 1074312.

The previous prime is 1080713. The next prime is 1080749. The reversal of 1080731 is 1370801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1370801 = 29 ⋅47269.

It is an interprime number because it is at equal distance from previous prime (1080713) and next prime (1080749).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1080731 is a prime.

It is a super-2 number, since 2×1080731² = 2335958988722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080791) 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, 2951 + ... + 3296.

It is an arithmetic number, because the mean of its divisors is an integer number (271788).

2^1080731 is an apocalyptic number.

1080731 is a deficient number, since it is larger than the sum of its proper divisors (6421).

1080731 is an equidigital number, since it uses as much as digits as its factorization.

1080731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1080731 is about 1039.5821275878. The cubic root of 1080731 is about 102.6216995877.

The spelling of 1080731 in words is "one million, eighty thousand, seven hundred thirty-one".