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13102349 = 131007873
BaseRepresentation
bin110001111110…
…110100001101
3220122200001012
4301332310031
511323233344
61144455005
7216240161
oct61766415
926580035
1013102349
117439a97
12447a465
132939990
141a50ca1
15123c29e
hexc7ed0d

13102349 has 4 divisors (see below), whose sum is σ = 14110236. Its totient is φ = 12094464.

The previous prime is 13102333. The next prime is 13102351. The reversal of 13102349 is 94320131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4072324 + 9030025 = 2018^2 + 3005^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102349 - 24 = 13102333 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 (13102849) 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, 503924 + ... + 503949.

It is an arithmetic number, because the mean of its divisors is an integer number (3527559).

Almost surely, 213102349 is an apocalyptic number.

It is an amenable number.

13102349 is a deficient number, since it is larger than the sum of its proper divisors (1007887).

13102349 is a wasteful number, since it uses less digits than its factorization.

13102349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007886.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13102349 is about 3619.7167016218. The cubic root of 13102349 is about 235.7489250243.

It can be divided in two parts, 131023 and 49, that added together give a 17-th power (131072 = 217).

The spelling of 13102349 in words is "thirteen million, one hundred two thousand, three hundred forty-nine".

Divisors: 1 13 1007873 13102349