Search a number
-
+
1313089 = 9713537
BaseRepresentation
bin101000000100101000001
32110201012221
411000211001
5314004324
644051041
714106151
oct5004501
92421187
101313089
118175a8
12533a81
1336c89b
14262761
151ae0e4
hex140941

1313089 has 4 divisors (see below), whose sum is σ = 1326724. Its totient is φ = 1299456.

The previous prime is 1313087. The next prime is 1313141. The reversal of 1313089 is 9803131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1016064 + 297025 = 1008^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313089 - 21 = 1313087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313083) 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, 6672 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (331681).

21313089 is an apocalyptic number.

It is an amenable number.

1313089 is a deficient number, since it is larger than the sum of its proper divisors (13635).

1313089 is an equidigital number, since it uses as much as digits as its factorization.

1313089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13634.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1313089 is about 1145.9009555804. The cubic root of 1313089 is about 109.5043540591.

The spelling of 1313089 in words is "one million, three hundred thirteen thousand, eighty-nine".

Divisors: 1 97 13537 1313089