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12130542431 = 77272383679
BaseRepresentation
bin10110100110000100…
…10110001101011111
31011022101202101220022
423103002112031133
5144320404324211
65323411342355
7606414623630
oct132302261537
934271671808
1012130542431
115165414087
1224265b19bb
1311b4210177
148310bd887
154aee59bdb
hex2d309635f

12130542431 has 8 divisors (see below), whose sum is σ = 13882552320. Its totient is φ = 10383301368.

The previous prime is 12130542421. The next prime is 12130542439. The reversal of 12130542431 is 13424503121.

It is a happy number.

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 12130542431 - 214 = 12130526047 is a prime.

It is a super-2 number, since 2×121305424312 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12130542431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130542439) 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, 1186751 + ... + 1196928.

It is an arithmetic number, because the mean of its divisors is an integer number (1735319040).

Almost surely, 212130542431 is an apocalyptic number.

12130542431 is a deficient number, since it is larger than the sum of its proper divisors (1752009889).

12130542431 is an equidigital number, since it uses as much as digits as its factorization.

12130542431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384413.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 12130542431 in words is "twelve billion, one hundred thirty million, five hundred forty-two thousand, four hundred thirty-one".

Divisors: 1 7 727 5089 2383679 16685753 1732934633 12130542431