317191047 has 16 divisors (see below), whose sum is σ = 444952032. Its totient is φ = 200724480.

The previous prime is 317191037. The next prime is 317191087. The reversal of 317191047 is 740191713.

It is not a de Polignac number, because 317191047 - 2⁶ = 317190983 is a prime.

It is a super-2 number, since 2×317191047² = 201220320593912418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 317190999 and 317191017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317191037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30298 + ... + 39399.

It is an arithmetic number, because the mean of its divisors is an integer number (27809502).

Almost surely, 2^317191047 is an apocalyptic number.

317191047 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

317191047 is a deficient number, since it is larger than the sum of its proper divisors (127760985).

317191047 is a wasteful number, since it uses less digits than its factorization.

317191047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69778.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 317191047 is about 17809.8581409286. The cubic root of 317191047 is about 681.9831431465.

The spelling of 317191047 in words is "three hundred seventeen million, one hundred ninety-one thousand, forty-seven".