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13120319 = 40132719
BaseRepresentation
bin110010000011…
…001100111111
3220200120200202
4302003030333
511324322234
61145114115
7216343442
oct62031477
926616622
1013120319
117451543
12448893b
132944c04
141a57659
15124277e
hexc8333f

13120319 has 4 divisors (see below), whose sum is σ = 13153440. Its totient is φ = 13087200.

The previous prime is 13120301. The next prime is 13120321. The reversal of 13120319 is 91302131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13120319 is a prime.

It is a super-2 number, since 2×131203192 = 344285541323522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13120319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15959 + ... + 16760.

It is an arithmetic number, because the mean of its divisors is an integer number (3288360).

Almost surely, 213120319 is an apocalyptic number.

13120319 is a deficient number, since it is larger than the sum of its proper divisors (33121).

13120319 is an equidigital number, since it uses as much as digits as its factorization.

13120319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33120.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13120319 is about 3622.1980895583. The cubic root of 13120319 is about 235.8566531093.

The spelling of 13120319 in words is "thirteen million, one hundred twenty thousand, three hundred nineteen".

Divisors: 1 401 32719 13120319