1313843 has 2 divisors, whose sum is σ = 1313844. Its totient is φ = 1313842.

The previous prime is 1313839. The next prime is 1313857. The reversal of 1313843 is 3483131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313843 - 2² = 1313839 is a prime.

It is a super-3 number, since 3×1313843³ = 6803802043339464321, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1313813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656921 + 656922.

It is an arithmetic number, because the mean of its divisors is an integer number (656922).

2^1313843 is an apocalyptic number.

1313843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313843 is an equidigital number, since it uses as much as digits as its factorization.

1313843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1313843 is about 1146.2299071303. The cubic root of 1313843 is about 109.5253098573.

Adding to 1313843 its reverse (3483131), we get a palindrome (4796974).

The spelling of 1313843 in words is "one million, three hundred thirteen thousand, eight hundred forty-three".