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12131310131 = 291091383429
BaseRepresentation
bin10110100110001010…
…10001101000110011
31011022110012101222122
423103011101220303
5144321103411011
65323440024455
7606424302053
oct132305215063
934273171878
1012131310131
115165898946
12242690212b
1311b441b725
1483123d563
154b005c3db
hex2d3151a33

12131310131 has 8 divisors (see below), whose sum is σ = 12561166800. Its totient is φ = 11702222560.

The previous prime is 12131310127. The next prime is 12131310173. The reversal of 12131310131 is 13101313121.

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 12131310131 - 22 = 12131310127 is a prime.

It is a super-2 number, since 2×121313101312 (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 (12131310101) 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, 160076 + ... + 223353.

It is an arithmetic number, because the mean of its divisors is an integer number (1570145850).

Almost surely, 212131310131 is an apocalyptic number.

12131310131 is a deficient number, since it is larger than the sum of its proper divisors (429856669).

12131310131 is a wasteful number, since it uses less digits than its factorization.

12131310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384549.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 12131310131 its reverse (13101313121), we get a palindrome (25232623252).

The spelling of 12131310131 in words is "twelve billion, one hundred thirty-one million, three hundred ten thousand, one hundred thirty-one".

Divisors: 1 29 1091 31639 383429 11119441 418321039 12131310131