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1315201 = 4727983
BaseRepresentation
bin101000001000110000001
32110211010011
411001012001
5314041301
644104521
714115256
oct5010601
92424104
101315201
11819148
12535141
13370834
1426342d
151aea51
hex141181

1315201 has 4 divisors (see below), whose sum is σ = 1343232. Its totient is φ = 1287172.

The previous prime is 1315187. The next prime is 1315211. The reversal of 1315201 is 1025131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1025131 = 2234597.

It is a cyclic number.

It is not a de Polignac number, because 1315201 - 27 = 1315073 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 (1315211) 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, 13945 + ... + 14038.

It is an arithmetic number, because the mean of its divisors is an integer number (335808).

21315201 is an apocalyptic number.

It is an amenable number.

1315201 is a deficient number, since it is larger than the sum of its proper divisors (28031).

1315201 is an equidigital number, since it uses as much as digits as its factorization.

1315201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28030.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1315201 is about 1146.8221309340. The cubic root of 1315201 is about 109.5630323136.

The spelling of 1315201 in words is "one million, three hundred fifteen thousand, two hundred one".

Divisors: 1 47 27983 1315201