1313508 has 48 divisors (see below), whose sum is σ = 3691520. Its totient is φ = 355104.

The previous prime is 1313467. The next prime is 1313567. The reversal of 1313508 is 8053131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1185 + ... + 2007.

2^1313508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1845760).

1313508 is an abundant number, since it is smaller than the sum of its proper divisors (2378012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313508 is a wasteful number, since it uses less digits than its factorization.

1313508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1313508 is about 1146.0837665721. The cubic root of 1313508 is about 109.5160002473.

Adding to 1313508 its reverse (8053131), we get a palindrome (9366639).

The spelling of 1313508 in words is "one million, three hundred thirteen thousand, five hundred eight".