317422639 has 4 divisors (see below), whose sum is σ = 317529400. Its totient is φ = 317315880.

The previous prime is 317422591. The next prime is 317422663. The reversal of 317422639 is 936224713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936224713 = 1217 ⋅769289.

It is a cyclic number.

It is not a de Polignac number, because 317422639 - 2¹¹ = 317420591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 317422598 and 317422607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317422739) 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, 48789 + ... + 54910.

It is an arithmetic number, because the mean of its divisors is an integer number (79382350).

Almost surely, 2^317422639 is an apocalyptic number.

317422639 is a deficient number, since it is larger than the sum of its proper divisors (106761).

317422639 is a wasteful number, since it uses less digits than its factorization.

317422639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106760.

The product of its digits is 54432, while the sum is 37.

The square root of 317422639 is about 17816.3587469494. The cubic root of 317422639 is about 682.1490824835.

The spelling of 317422639 in words is "three hundred seventeen million, four hundred twenty-two thousand, six hundred thirty-nine".