1313615 has 4 divisors (see below), whose sum is σ = 1576344. Its totient is φ = 1050888.

The previous prime is 1313597. The next prime is 1313621. The reversal of 1313615 is 5163131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5163131 = 29 ⋅178039.

It is a cyclic number.

It is not a de Polignac number, because 1313615 - 2⁸ = 1313359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131357 + ... + 131366.

It is an arithmetic number, because the mean of its divisors is an integer number (394086).

2^1313615 is an apocalyptic number.

1313615 is a deficient number, since it is larger than the sum of its proper divisors (262729).

1313615 is an equidigital number, since it uses as much as digits as its factorization.

1313615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262728.

The product of its digits is 270, while the sum is 20.

The square root of 1313615 is about 1146.1304463280. The cubic root of 1313615 is about 109.5189739366.

Adding to 1313615 its reverse (5163131), we get a palindrome (6476746).

The spelling of 1313615 in words is "one million, three hundred thirteen thousand, six hundred fifteen".