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13051213 = 75931601
BaseRepresentation
bin110001110010…
…010101001101
3220120001220021
4301302111031
511320114323
61143422141
7215635120
oct61622515
926501807
1013051213
11740462a
124454951
13291c616
141a3a3b7
15122c05d
hexc7254d

13051213 has 8 divisors (see below), whose sum is σ = 15168960. Its totient is φ = 10996800.

The previous prime is 13051201. The next prime is 13051219. The reversal of 13051213 is 31215031.

13051213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13051213 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 (13051219) 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, 15388 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (1896120).

Almost surely, 213051213 is an apocalyptic number.

It is an amenable number.

13051213 is a deficient number, since it is larger than the sum of its proper divisors (2117747).

13051213 is an equidigital number, since it uses as much as digits as its factorization.

13051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31667.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 13051213 is about 3612.6462600149. The cubic root of 13051213 is about 235.4418306182.

Adding to 13051213 its reverse (31215031), we get a palindrome (44266244).

The spelling of 13051213 in words is "thirteen million, fifty-one thousand, two hundred thirteen".

Divisors: 1 7 59 413 31601 221207 1864459 13051213