1313145 has 32 divisors (see below), whose sum is σ = 2384640. Its totient is φ = 685440.

The previous prime is 1313141. The next prime is 1313153. The reversal of 1313145 is 5413131.

It is not a de Polignac number, because 1313145 - 2² = 1313141 is a prime.

It is a Curzon number.

1313145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1313141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9517 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (74520).

2^1313145 is an apocalyptic number.

1313145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313145 is a deficient number, since it is larger than the sum of its proper divisors (1071495).

1313145 is a wasteful number, since it uses less digits than its factorization.

1313145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 216 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 1313145 is about 1145.9253902414. The cubic root of 1313145 is about 109.5059107337.

Adding to 1313145 its reverse (5413131), we get a palindrome (6726276).

The spelling of 1313145 in words is "one million, three hundred thirteen thousand, one hundred forty-five".