1313244 has 18 divisors (see below), whose sum is σ = 3319680. Its totient is φ = 437736.

The previous prime is 1313239. The next prime is 1313293. The reversal of 1313244 is 4423131.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18204 + ... + 18275.

2^1313244 is an apocalyptic number.

It is an amenable number.

1313244 is an abundant number, since it is smaller than the sum of its proper divisors (2006436).

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

1313244 is a wasteful number, since it uses less digits than its factorization.

1313244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36489 (or 36484 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1313244 is about 1145.9685859569. The cubic root of 1313244 is about 109.5086626036.

Adding to 1313244 its reverse (4423131), we get a palindrome (5736375).

It can be divided in two parts, 131324 and 4, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 1313244 in words is "one million, three hundred thirteen thousand, two hundred forty-four".