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315271 = 1128661
BaseRepresentation
bin1001100111110000111
3121000110201
41030332013
540042041
610431331
72452105
oct1147607
9530421
10315271
111a5960
12132547
13b0668
1482c75
1563631
hex4cf87

315271 has 4 divisors (see below), whose sum is σ = 343944. Its totient is φ = 286600.

The previous prime is 315269. The next prime is 315281. The reversal of 315271 is 172513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172513 = 1115683.

It is a cyclic number.

It is not a de Polignac number, because 315271 - 21 = 315269 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 (315251) 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, 14320 + ... + 14341.

It is an arithmetic number, because the mean of its divisors is an integer number (85986).

2315271 is an apocalyptic number.

315271 is a deficient number, since it is larger than the sum of its proper divisors (28673).

315271 is a wasteful number, since it uses less digits than its factorization.

315271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28672.

The product of its digits is 210, while the sum is 19.

The square root of 315271 is about 561.4899821012. The cubic root of 315271 is about 68.0604278308.

Adding to 315271 its reverse (172513), we get a palindrome (487784).

It can be divided in two parts, 3152 and 71, that added together give a palindrome (3223).

The spelling of 315271 in words is "three hundred fifteen thousand, two hundred seventy-one".

Divisors: 1 11 28661 315271