Search a number
-
+
1315349 = 7187907
BaseRepresentation
bin101000001001000010101
32110211022122
411001020111
5314042344
644105325
714115560
oct5011025
92424278
101315349
11819272
12535245
13370919
142634d7
151aeaee
hex141215

1315349 has 4 divisors (see below), whose sum is σ = 1503264. Its totient is φ = 1127436.

The previous prime is 1315309. The next prime is 1315367. The reversal of 1315349 is 9435131.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1315349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93947 + ... + 93960.

It is an arithmetic number, because the mean of its divisors is an integer number (375816).

21315349 is an apocalyptic number.

It is an amenable number.

1315349 is a deficient number, since it is larger than the sum of its proper divisors (187915).

1315349 is an equidigital number, since it uses as much as digits as its factorization.

1315349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187914.

The product of its digits is 1620, while the sum is 26.

The square root of 1315349 is about 1146.8866552541. The cubic root of 1315349 is about 109.5671418808.

The spelling of 1315349 in words is "one million, three hundred fifteen thousand, three hundred forty-nine".

Divisors: 1 7 187907 1315349