1331109 has 24 divisors (see below), whose sum is σ = 2143232. Its totient is φ = 790560.

The previous prime is 1331107. The next prime is 1331119. The reversal of 1331109 is 9011331.

It is not a de Polignac number, because 1331109 - 2¹ = 1331107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331091 and 1331100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331107) 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 23 ways as a sum of consecutive naturals, for example, 3444 + ... + 3810.

2^1331109 is an apocalyptic number.

It is an amenable number.

1331109 is a deficient number, since it is larger than the sum of its proper divisors (812123).

1331109 is a wasteful number, since it uses less digits than its factorization.

1331109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1331109 is about 1153.7369717574. The cubic root of 1331109 is about 110.0030026729.

The spelling of 1331109 in words is "one million, three hundred thirty-one thousand, one hundred nine".