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13252131 = 326721977
BaseRepresentation
bin110010100011…
…011000100011
3220221021111200
4302203120203
511343032011
61152012243
7220432644
oct62433043
926837450
1013252131
117531582
124531083
13298cbc9
141a8d6cb
15126b856
hexca3623

13252131 has 12 divisors (see below), whose sum is σ = 19428552. Its totient is φ = 8702496.

The previous prime is 13252123. The next prime is 13252133. The reversal of 13252131 is 13125231.

It is not a de Polignac number, because 13252131 - 23 = 13252123 is a prime.

It is a super-2 number, since 2×132521312 = 351237952082322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13252133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10386 + ... + 11591.

It is an arithmetic number, because the mean of its divisors is an integer number (1619046).

Almost surely, 213252131 is an apocalyptic number.

13252131 is a deficient number, since it is larger than the sum of its proper divisors (6176421).

13252131 is a wasteful number, since it uses less digits than its factorization.

13252131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050 (or 22047 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 13252131 is about 3640.3476482336. The cubic root of 13252131 is about 236.6438596903.

Adding to 13252131 its reverse (13125231), we get a palindrome (26377362).

The spelling of 13252131 in words is "thirteen million, two hundred fifty-two thousand, one hundred thirty-one".

Divisors: 1 3 9 67 201 603 21977 65931 197793 1472459 4417377 13252131