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13332131 = 17784243
BaseRepresentation
bin110010110110…
…111010100011
3221002100020122
4302312322203
511403112011
61153430455
7221215121
oct62667243
927070218
1013332131
11758669a
12456b42b
1329ba447
141ab0911
1512853db
hexcb6ea3

13332131 has 4 divisors (see below), whose sum is σ = 14116392. Its totient is φ = 12547872.

The previous prime is 13332113. The next prime is 13332169. The reversal of 13332131 is 13123331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13123331 = 131009487.

It is a cyclic number.

It is not a de Polignac number, because 13332131 - 210 = 13331107 is a prime.

It is a super-2 number, since 2×133321312 = 355491434002322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 784243 = 13332131 / (1 + 3 + 3 + 3 + 2 + 1 + 3 + 1).

It is not an unprimeable number, because it can be changed into a prime (13332181) 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, 392105 + ... + 392138.

It is an arithmetic number, because the mean of its divisors is an integer number (3529098).

Almost surely, 213332131 is an apocalyptic number.

13332131 is a deficient number, since it is larger than the sum of its proper divisors (784261).

13332131 is an equidigital number, since it uses as much as digits as its factorization.

13332131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784260.

The product of its digits is 162, while the sum is 17.

The square root of 13332131 is about 3651.3190767173. The cubic root of 13332131 is about 237.1190924661.

Adding to 13332131 its reverse (13123331), we get a palindrome (26455462).

The spelling of 13332131 in words is "thirteen million, three hundred thirty-two thousand, one hundred thirty-one".

Divisors: 1 17 784243 13332131