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13207319 = 52325253
BaseRepresentation
bin110010011000…
…011100010111
3220212000000222
4302120130113
511340113234
61151024555
7220155206
oct62303427
926760028
1013207319
117500944
12450b15b
1329756a8
141a7b23d
15125d42e
hexc98717

13207319 has 4 divisors (see below), whose sum is σ = 13233096. Its totient is φ = 13181544.

The previous prime is 13207307. The next prime is 13207343. The reversal of 13207319 is 91370231.

13207319 is digitally balanced in base 2, 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.

It is a cyclic number.

It is not a de Polignac number, because 13207319 - 24 = 13207303 is a prime.

It is a super-2 number, since 2×132073192 = 348866550335522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203319) 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, 12104 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (3308274).

Almost surely, 213207319 is an apocalyptic number.

13207319 is a deficient number, since it is larger than the sum of its proper divisors (25777).

13207319 is an equidigital number, since it uses as much as digits as its factorization.

13207319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25776.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13207319 is about 3634.1875295587. The cubic root of 13207319 is about 236.3768218796.

The spelling of 13207319 in words is "thirteen million, two hundred seven thousand, three hundred nineteen".

Divisors: 1 523 25253 13207319