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13164331 = 15187181
BaseRepresentation
bin110010001101…
…111100101011
3220202211001211
4302031330223
511332224311
61150053551
7216615655
oct62157453
926684054
1013164331
117481614
1244aa2b7
13295bc5b
141a696d5
151250821
hexc8df2b

13164331 has 4 divisors (see below), whose sum is σ = 13251664. Its totient is φ = 13077000.

The previous prime is 13164329. The next prime is 13164343. The reversal of 13164331 is 13346131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13346131 = 22815851.

It is a cyclic number.

It is not a de Polignac number, because 13164331 - 21 = 13164329 is a prime.

It is a super-2 number, since 2×131643312 = 346599221355122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13164301) 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, 43440 + ... + 43741.

It is an arithmetic number, because the mean of its divisors is an integer number (3312916).

Almost surely, 213164331 is an apocalyptic number.

13164331 is a deficient number, since it is larger than the sum of its proper divisors (87333).

13164331 is an equidigital number, since it uses as much as digits as its factorization.

13164331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87332.

The product of its digits is 648, while the sum is 22.

The square root of 13164331 is about 3628.2683197360. The cubic root of 13164331 is about 236.1200851563.

The spelling of 13164331 in words is "thirteen million, one hundred sixty-four thousand, three hundred thirty-one".

Divisors: 1 151 87181 13164331