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8313013 = 19437527
BaseRepresentation
bin11111101101100010110101
3120122100022101
4133231202311
54112004023
6454102101
7130442122
oct37554265
916570271
108313013
114768765
12294a931
131950a57
141165749
15ae31ad
hex7ed8b5

8313013 has 4 divisors (see below), whose sum is σ = 8750560. Its totient is φ = 7875468.

The previous prime is 8313001. The next prime is 8313029. The reversal of 8313013 is 3103138.

8313013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 8313013 - 25 = 8312981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 437527 = 8313013 / (8 + 3 + 1 + 3 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8313043) 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, 218745 + ... + 218782.

It is an arithmetic number, because the mean of its divisors is an integer number (2187640).

Almost surely, 28313013 is an apocalyptic number.

It is an amenable number.

8313013 is a deficient number, since it is larger than the sum of its proper divisors (437547).

8313013 is a wasteful number, since it uses less digits than its factorization.

8313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437546.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 8313013 is about 2883.2296127780. The cubic root of 8313013 is about 202.5751425647.

It can be divided in two parts, 831 and 3013, that added together give a square (3844 = 622).

The spelling of 8313013 in words is "eight million, three hundred thirteen thousand, thirteen".

Divisors: 1 19 437527 8313013