139313 has 2 divisors, whose sum is σ = 139314. Its totient is φ = 139312.

The previous prime is 139309. The next prime is 139333. The reversal of 139313 is 313931.

It is an a-pointer prime, because the next prime (139333) can be obtained adding 139313 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134689 + 4624 = 367^2 + 68^2 .

It is an emirp because it is prime and its reverse (313931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139313 - 2² = 139309 is a prime.

It is a super-2 number, since 2×139313² = 38816223938, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (139303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69656 + 69657.

It is an arithmetic number, because the mean of its divisors is an integer number (69657).

2¹³⁹³¹³ is an apocalyptic number.

It is an amenable number.

139313 is a deficient number, since it is larger than the sum of its proper divisors (1).

139313 is an equidigital number, since it uses as much as digits as its factorization.

139313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243, while the sum is 20.

The square root of 139313 is about 373.2465672983. The cubic root of 139313 is about 51.8398673424.

The spelling of 139313 in words is "one hundred thirty-nine thousand, three hundred thirteen".