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13013030131 = 14818786651
BaseRepresentation
bin11000001111010001…
…10001010011110011
31020120220022102102221
430013220301103303
5203122313431011
65551134221511
7640321634233
oct140750612363
936526272387
1013013030131
115578575162
122632054897
1312c4cb483a
148b639bcc3
15512677971
hex307a314f3

13013030131 has 4 divisors (see below), whose sum is σ = 13021818264. Its totient is φ = 13004242000.

The previous prime is 13013030119. The next prime is 13013030141. The reversal of 13013030131 is 13103031031.

13013030131 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 13103031031 = 41273174953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13013030131 is a prime.

It is a super-2 number, since 2×130130301312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13013030141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4391845 + ... + 4394806.

It is an arithmetic number, because the mean of its divisors is an integer number (3255454566).

Almost surely, 213013030131 is an apocalyptic number.

13013030131 is a deficient number, since it is larger than the sum of its proper divisors (8788133).

13013030131 is an equidigital number, since it uses as much as digits as its factorization.

13013030131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8788132.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 13013030131 its reverse (13103031031), we get a palindrome (26116061162).

The spelling of 13013030131 in words is "thirteen billion, thirteen million, thirty thousand, one hundred thirty-one".

Divisors: 1 1481 8786651 13013030131