1331065 has 16 divisors (see below), whose sum is σ = 1685376. Its totient is φ = 1008000.

The previous prime is 1331063. The next prime is 1331093. The reversal of 1331065 is 5601331.

It is not a de Polignac number, because 1331065 - 2¹ = 1331063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8740 + ... + 8890.

It is an arithmetic number, because the mean of its divisors is an integer number (105336).

2^1331065 is an apocalyptic number.

It is an amenable number.

1331065 is a deficient number, since it is larger than the sum of its proper divisors (354311).

1331065 is a wasteful number, since it uses less digits than its factorization.

1331065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1331065 is about 1153.7179031288. The cubic root of 1331065 is about 110.0017906045.

Adding to 1331065 its reverse (5601331), we get a palindrome (6932396).

The spelling of 1331065 in words is "one million, three hundred thirty-one thousand, sixty-five".