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13143091 = 131759471
BaseRepresentation
bin110010001000…
…110000110011
3220201201221011
4302020300303
511331034331
61145411351
7216500023
oct62106063
926651834
1013143091
117467665
124499b57
1329523a0
141a61a83
1512493b1
hexc88c33

13143091 has 8 divisors (see below), whose sum is σ = 14986944. Its totient is φ = 11418240.

The previous prime is 13143089. The next prime is 13143149. The reversal of 13143091 is 19034131.

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 13143091 - 21 = 13143089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13143391) 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, 29515 + ... + 29956.

It is an arithmetic number, because the mean of its divisors is an integer number (1873368).

Almost surely, 213143091 is an apocalyptic number.

13143091 is a deficient number, since it is larger than the sum of its proper divisors (1843853).

13143091 is a wasteful number, since it uses less digits than its factorization.

13143091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59501.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 13143091 is about 3625.3401219748. The cubic root of 13143091 is about 235.9930274202.

The spelling of 13143091 in words is "thirteen million, one hundred forty-three thousand, ninety-one".

Divisors: 1 13 17 221 59471 773123 1011007 13143091