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13271131 = 31795419
BaseRepresentation
bin110010101000…
…000001011011
3220222020120101
4302220001123
511344134011
61152240231
7220542226
oct62500133
926866511
1013271131
117544885
124540077
132998753
141a965bd
1512722c1
hexca805b

13271131 has 8 divisors (see below), whose sum is σ = 13875200. Its totient is φ = 12678120.

The previous prime is 13271117. The next prime is 13271143. The reversal of 13271131 is 13117231.

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 13271131 - 29 = 13270619 is a prime.

It is a super-2 number, since 2×132711312 = 352245836038322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13271099 and 13271108.

It is not an unprimeable number, because it can be changed into a prime (13271171) 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, 261 + ... + 5158.

It is an arithmetic number, because the mean of its divisors is an integer number (1734400).

Almost surely, 213271131 is an apocalyptic number.

13271131 is a deficient number, since it is larger than the sum of its proper divisors (604069).

13271131 is an equidigital number, since it uses as much as digits as its factorization.

13271131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its digits is 126, while the sum is 19.

The square root of 13271131 is about 3642.9563543913. The cubic root of 13271131 is about 236.7569002835.

Adding to 13271131 its reverse (13117231), we get a palindrome (26388362).

The spelling of 13271131 in words is "thirteen million, two hundred seventy-one thousand, one hundred thirty-one".

Divisors: 1 31 79 2449 5419 167989 428101 13271131