Search a number
-
+
317019361 = 3110226431
BaseRepresentation
bin10010111001010…
…101010011100001
3211002112020210211
4102321111103201
51122124104421
651242454121
710566422461
oct2271252341
9732466724
10317019361
11152a4937a
128a204341
13508a9629
1430163ba1
151cc719e1
hex12e554e1

317019361 has 4 divisors (see below), whose sum is σ = 327245824. Its totient is φ = 306792900.

The previous prime is 317019319. The next prime is 317019431. The reversal of 317019361 is 163910713.

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: 163910713 = 172395131.

It is a cyclic number.

It is not a de Polignac number, because 317019361 - 211 = 317017313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 10226431 = 317019361 / (3 + 1 + 7 + 0 + 1 + 9 + 3 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317019301) 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, 5113185 + ... + 5113246.

It is an arithmetic number, because the mean of its divisors is an integer number (81811456).

Almost surely, 2317019361 is an apocalyptic number.

317019361 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

317019361 is a deficient number, since it is larger than the sum of its proper divisors (10226463).

317019361 is a wasteful number, since it uses less digits than its factorization.

317019361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226462.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 317019361 is about 17805.0375175117. The cubic root of 317019361 is about 681.8600752661.

The spelling of 317019361 in words is "three hundred seventeen million, nineteen thousand, three hundred sixty-one".

Divisors: 1 31 10226431 317019361