317806742 has 24 divisors (see below), whose sum is σ = 524924400. Its totient is φ = 144199440.

The previous prime is 317806693. The next prime is 317806747. The reversal of 317806742 is 247608713.

It is a super-2 number, since 2×317806742² = 202002250521309128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 317806696 and 317806705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317806747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221684 + ... + 223112.

It is an arithmetic number, because the mean of its divisors is an integer number (21871850).

Almost surely, 2^317806742 is an apocalyptic number.

317806742 is a deficient number, since it is larger than the sum of its proper divisors (207117658).

317806742 is a wasteful number, since it uses less digits than its factorization.

317806742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 317806742 is about 17827.1349913552. The cubic root of 317806742 is about 682.4241205162.

The spelling of 317806742 in words is "three hundred seventeen million, eight hundred six thousand, seven hundred forty-two".