1091307 has 16 divisors (see below), whose sum is σ = 1678592. Its totient is φ = 617760.

The previous prime is 1091287. The next prime is 1091329. The reversal of 1091307 is 7031901.

It is not a de Polignac number, because 1091307 - 2⁶ = 1091243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3132 + ... + 3462.

It is an arithmetic number, because the mean of its divisors is an integer number (104912).

2^1091307 is an apocalyptic number.

1091307 is a deficient number, since it is larger than the sum of its proper divisors (587285).

1091307 is a wasteful number, since it uses less digits than its factorization.

1091307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 1091307 is about 1044.6564028426. The cubic root of 1091307 is about 102.9553644534.

The spelling of 1091307 in words is "one million, ninety-one thousand, three hundred seven".