1306109 has 4 divisors (see below), whose sum is σ = 1492704. Its totient is φ = 1119516.

The previous prime is 1306103. The next prime is 1306121. The reversal of 1306109 is 9016031.

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: 9016031 = 379 ⋅23789.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1306109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306103) 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, 93287 + ... + 93300.

It is an arithmetic number, because the mean of its divisors is an integer number (373176).

2^1306109 is an apocalyptic number.

It is an amenable number.

1306109 is a deficient number, since it is larger than the sum of its proper divisors (186595).

1306109 is an equidigital number, since it uses as much as digits as its factorization.

1306109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186594.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1306109 is about 1142.8512589134. The cubic root of 1306109 is about 109.3099781150.

The spelling of 1306109 in words is "one million, three hundred six thousand, one hundred nine".