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13131342011 = 17772431883
BaseRepresentation
bin11000011101011000…
…00110000010111011
31020220010221021211102
430032230012002323
5203343110421021
610011002122015
7643256364644
oct141654060273
936803837742
1013131342011
115629333677
1226657b030b
13131366a278
148c7d986cb
1551cc4800b
hex30eb060bb

13131342011 has 4 divisors (see below), whose sum is σ = 13903773912. Its totient is φ = 12358910112.

The previous prime is 13131341989. The next prime is 13131342017. The reversal of 13131342011 is 11024313131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11024313131 = 13848024087.

It is a cyclic number.

It is not a de Polignac number, because 13131342011 - 218 = 13131079867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131342017) 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, 386215925 + ... + 386215958.

It is an arithmetic number, because the mean of its divisors is an integer number (3475943478).

Almost surely, 213131342011 is an apocalyptic number.

13131342011 is a deficient number, since it is larger than the sum of its proper divisors (772431901).

13131342011 is an equidigital number, since it uses as much as digits as its factorization.

13131342011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772431900.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 13131342011 its reverse (11024313131), we get a palindrome (24155655142).

The spelling of 13131342011 in words is "thirteen billion, one hundred thirty-one million, three hundred forty-two thousand, eleven".

Divisors: 1 17 772431883 13131342011