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13302131 = 31429101
BaseRepresentation
bin110010101111…
…100101110011
3221000211002112
4302233211303
511401132011
61153035535
7221031503
oct62574563
927024075
1013302131
1175660a7
124555bab
1329a98ab
141aa3a03
15127b58b
hexcaf973

13302131 has 4 divisors (see below), whose sum is σ = 13731264. Its totient is φ = 12873000.

The previous prime is 13302127. The next prime is 13302137. The reversal of 13302131 is 13120331.

13302131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13302131 - 22 = 13302127 is a prime.

It is a super-2 number, since 2×133021312 = 353893378282322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13302137) 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, 214520 + ... + 214581.

It is an arithmetic number, because the mean of its divisors is an integer number (3432816).

Almost surely, 213302131 is an apocalyptic number.

13302131 is a deficient number, since it is larger than the sum of its proper divisors (429133).

13302131 is an equidigital number, since it uses as much as digits as its factorization.

13302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429132.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 13302131 is about 3647.2086586868. The cubic root of 13302131 is about 236.9411035381.

Adding to 13302131 its reverse (13120331), we get a palindrome (26422462).

The spelling of 13302131 in words is "thirteen million, three hundred two thousand, one hundred thirty-one".

Divisors: 1 31 429101 13302131