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13197213 = 324873011
BaseRepresentation
bin110010010101…
…111110011101
3220211111011200
4302111332131
511334302323
61150510113
7220113561
oct62257635
926744150
1013197213
1174a4297
124505339
132970c03
141a776a1
15125a443
hexc95f9d

13197213 has 12 divisors (see below), whose sum is σ = 19108128. Its totient is φ = 8777160.

The previous prime is 13197209. The next prime is 13197241. The reversal of 13197213 is 31279131.

It is not a de Polignac number, because 13197213 - 22 = 13197209 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13197293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2878 + ... + 5888.

It is an arithmetic number, because the mean of its divisors is an integer number (1592344).

Almost surely, 213197213 is an apocalyptic number.

It is an amenable number.

13197213 is a deficient number, since it is larger than the sum of its proper divisors (5910915).

13197213 is a wasteful number, since it uses less digits than its factorization.

13197213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3501 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 13197213 is about 3632.7968564179. The cubic root of 13197213 is about 236.3165160821.

It can be divided in two parts, 131 and 97213, that added together give a square (97344 = 3122).

The spelling of 13197213 in words is "thirteen million, one hundred ninety-seven thousand, two hundred thirteen".

Divisors: 1 3 9 487 1461 3011 4383 9033 27099 1466357 4399071 13197213