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13181069 = 111770487
BaseRepresentation
bin110010010010…
…000010001101
3220210200000202
4302102002031
511333243234
61150303245
7220015526
oct62220215
926720022
1013181069
117493150
1244b7b25
132966765
141a7184d
15125577e
hexc9208d

13181069 has 8 divisors (see below), whose sum is σ = 15225408. Its totient is φ = 11277760.

The previous prime is 13181057. The next prime is 13181083. The reversal of 13181069 is 96018131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13181069 - 24 = 13181053 is a prime.

It is a super-2 number, since 2×131810692 = 347481159965522, which contains 22 as substring.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13181029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35057 + ... + 35430.

It is an arithmetic number, because the mean of its divisors is an integer number (1903176).

Almost surely, 213181069 is an apocalyptic number.

It is an amenable number.

13181069 is a deficient number, since it is larger than the sum of its proper divisors (2044339).

13181069 is a wasteful number, since it uses less digits than its factorization.

13181069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70515.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 13181069 is about 3630.5741970107. The cubic root of 13181069 is about 236.2201156642.

The spelling of 13181069 in words is "thirteen million, one hundred eighty-one thousand, sixty-nine".

Divisors: 1 11 17 187 70487 775357 1198279 13181069