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13101311131 = 38791337741
BaseRepresentation
bin11000011001110011…
…00010010010011011
31020211001102120012121
430030321202102123
5203312413424011
610004010322111
7642443210236
oct141471422233
936731376177
1013101311131
115613391a67
122657729337
13130a38420c
148c3dbc41d
1551a2b4e71
hex30ce6249b

13101311131 has 4 divisors (see below), whose sum is σ = 13101687664. Its totient is φ = 13100934600.

The previous prime is 13101311117. The next prime is 13101311141. The reversal of 13101311131 is 13111310131.

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 13101311131 - 215 = 13101278363 is a prime.

It is a super-2 number, since 2×131013111312 (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 (13101311101) 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, 130080 + ... + 207661.

It is an arithmetic number, because the mean of its divisors is an integer number (3275421916).

Almost surely, 213101311131 is an apocalyptic number.

13101311131 is a deficient number, since it is larger than the sum of its proper divisors (376533).

13101311131 is an equidigital number, since it uses as much as digits as its factorization.

13101311131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376532.

The product of its (nonzero) digits is 27, while the sum is 16.

Adding to 13101311131 its reverse (13111310131), we get a palindrome (26212621262).

The spelling of 13101311131 in words is "thirteen billion, one hundred one million, three hundred eleven thousand, one hundred thirty-one".

Divisors: 1 38791 337741 13101311131