1311315 has 8 divisors (see below), whose sum is σ = 2098128. Its totient is φ = 699360.

The previous prime is 1311311. The next prime is 1311341. The reversal of 1311315 is 5131131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1311315 - 2² = 1311311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 87421 = 1311315 / (1 + 3 + 1 + 1 + 3 + 1 + 5).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1311294 and 1311303.

It is not an unprimeable number, because it can be changed into a prime (1311311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43696 + ... + 43725.

It is an arithmetic number, because the mean of its divisors is an integer number (262266).

2^1311315 is an apocalyptic number.

1311315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311315 is a deficient number, since it is larger than the sum of its proper divisors (786813).

1311315 is an equidigital number, since it uses as much as digits as its factorization.

1311315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87429.

The product of its digits is 45, while the sum is 15.

The square root of 1311315 is about 1145.1266305523. The cubic root of 1311315 is about 109.4550179078.

Adding to 1311315 its reverse (5131131), we get a palindrome (6442446).

The spelling of 1311315 in words is "one million, three hundred eleven thousand, three hundred fifteen".