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13013191 = 61383557
BaseRepresentation
bin110001101001…
…000011000111
3220111010202001
4301221003013
511312410231
61142530131
7215416222
oct61510307
926433661
1013013191
117389004
124436947
132908219
141a2a5b9
151220b61
hexc690c7

13013191 has 8 divisors (see below), whose sum is σ = 13284864. Its totient is φ = 12743520.

The previous prime is 13013179. The next prime is 13013197. The reversal of 13013191 is 19131031.

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 13013191 - 29 = 13012679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13013197) 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 7 ways as a sum of consecutive naturals, for example, 23085 + ... + 23641.

It is an arithmetic number, because the mean of its divisors is an integer number (1660608).

Almost surely, 213013191 is an apocalyptic number.

13013191 is a deficient number, since it is larger than the sum of its proper divisors (271673).

13013191 is an equidigital number, since it uses as much as digits as its factorization.

13013191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001.

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 13013191 is about 3607.3800742367. The cubic root of 13013191 is about 235.2129712620.

The spelling of 13013191 in words is "thirteen million, thirteen thousand, one hundred ninety-one".

Divisors: 1 61 383 557 23363 33977 213331 13013191