1313812 has 24 divisors (see below), whose sum is σ = 2469600. Its totient is φ = 609696.

The previous prime is 1313797. The next prime is 1313813. The reversal of 1313812 is 2183131.

It is a super-2 number, since 2×1313812² = 3452203942688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1313812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4338 + ... + 4630.

It is an arithmetic number, because the mean of its divisors is an integer number (102900).

2^1313812 is an apocalyptic number.

It is an amenable number.

1313812 is a deficient number, since it is larger than the sum of its proper divisors (1155788).

1313812 is a wasteful number, since it uses less digits than its factorization.

1313812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1313812 is about 1146.2163844580. The cubic root of 1313812 is about 109.5244484375.

Adding to 1313812 its reverse (2183131), we get a palindrome (3496943).

The spelling of 1313812 in words is "one million, three hundred thirteen thousand, eight hundred twelve".