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317930049 = 3379149053
BaseRepresentation
bin10010111100110…
…011101001000001
3211011020112001000
4102330303221001
51122342230144
651314202213
710610234523
oct2274635101
9734215030
10317930049
11153510608
128a583369
1350b37cb8
143031da13
151cda1769
hex12f33a41

317930049 has 16 divisors (see below), whose sum is σ = 476972800. Its totient is φ = 209269008.

The previous prime is 317929999. The next prime is 317930051. The reversal of 317930049 is 940039713.

It is not a de Polignac number, because 317930049 - 29 = 317929537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 317929995 and 317930022.

It is not an unprimeable number, because it can be changed into a prime (317930099) 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, 72394 + ... + 76659.

It is an arithmetic number, because the mean of its divisors is an integer number (29810800).

Almost surely, 2317930049 is an apocalyptic number.

It is an amenable number.

317930049 is a deficient number, since it is larger than the sum of its proper divisors (159042751).

317930049 is a wasteful number, since it uses less digits than its factorization.

317930049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149141 (or 149135 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 317930049 is about 17830.5930636084. The cubic root of 317930049 is about 682.5123678474.

The spelling of 317930049 in words is "three hundred seventeen million, nine hundred thirty thousand, forty-nine".

Divisors: 1 3 9 27 79 237 711 2133 149053 447159 1341477 4024431 11775187 35325561 105976683 317930049