1381313 has 2 divisors, whose sum is σ = 1381314. Its totient is φ = 1381312.

The previous prime is 1381307. The next prime is 1381327. The reversal of 1381313 is 3131831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 935089 + 446224 = 967^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381313 - 2⁴ = 1381297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690656 + 690657.

It is an arithmetic number, because the mean of its divisors is an integer number (690657).

2^1381313 is an apocalyptic number.

It is an amenable number.

1381313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381313 is an equidigital number, since it uses as much as digits as its factorization.

1381313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 1381313 is about 1175.2927294934. The cubic root of 1381313 is about 111.3689263929.

The spelling of 1381313 in words is "one million, three hundred eighty-one thousand, three hundred thirteen".