139317 has 4 divisors (see below), whose sum is σ = 185760. Its totient is φ = 92876.

The previous prime is 139313. The next prime is 139333. The reversal of 139317 is 713931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713931 = 3 ⋅237977.

It is a cyclic number.

It is not a de Polignac number, because 139317 - 2² = 139313 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139317.

It is not an unprimeable number, because it can be changed into a prime (139313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23217 + ... + 23222.

It is an arithmetic number, because the mean of its divisors is an integer number (46440).

2¹³⁹³¹⁷ is an apocalyptic number.

It is an amenable number.

139317 is a deficient number, since it is larger than the sum of its proper divisors (46443).

139317 is an equidigital number, since it uses as much as digits as its factorization.

139317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46442.

The product of its digits is 567, while the sum is 24.

The square root of 139317 is about 373.2519256481. The cubic root of 139317 is about 51.8403634853.

It can be divided in two parts, 13 and 9317, that multiplied together give a palindrome (121121).

The spelling of 139317 in words is "one hundred thirty-nine thousand, three hundred seventeen".