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315079 = 1631933
BaseRepresentation
bin1001100111011000111
3121000012121
41030323013
540040304
610430411
72451412
oct1147307
9530177
10315079
111a57a6
12132407
13b054b
1482b79
1563554
hex4cec7

315079 has 4 divisors (see below), whose sum is σ = 317176. Its totient is φ = 312984.

The previous prime is 315067. The next prime is 315083. The reversal of 315079 is 970513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970513 = 1757089.

It is a cyclic number.

It is not a de Polignac number, because 315079 - 25 = 315047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 804 + ... + 1129.

It is an arithmetic number, because the mean of its divisors is an integer number (79294).

2315079 is an apocalyptic number.

315079 is a deficient number, since it is larger than the sum of its proper divisors (2097).

315079 is a wasteful number, since it uses less digits than its factorization.

315079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 315079 is about 561.3189823977. The cubic root of 315079 is about 68.0466087611.

The spelling of 315079 in words is "three hundred fifteen thousand, seventy-nine".

Divisors: 1 163 1933 315079