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12000320131 = 31735302837
BaseRepresentation
bin10110010110100011…
…00101101010000011
31010222022201102111011
423023101211222003
5144034040221011
65302440301351
7603244016032
oct131321455203
933868642434
1012000320131
1150a8960148
1223aaa71857
131193247457
1481baa2719
154a37d5621
hex2cb465a83

12000320131 has 8 divisors (see below), whose sum is σ = 12557120384. Its totient is φ = 11454125760.

The previous prime is 12000320093. The next prime is 12000320161. The reversal of 12000320131 is 13102300021.

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 12000320131 - 29 = 12000319619 is a prime.

It is a super-2 number, since 2×120003201312 (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 (12000320161) 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, 2649156 + ... + 2653681.

It is an arithmetic number, because the mean of its divisors is an integer number (1569640048).

Almost surely, 212000320131 is an apocalyptic number.

12000320131 is a deficient number, since it is larger than the sum of its proper divisors (556800253).

12000320131 is an equidigital number, since it uses as much as digits as its factorization.

12000320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302941.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12000320131 its reverse (13102300021), we get a palindrome (25102620152).

The spelling of 12000320131 in words is "twelve billion, three hundred twenty thousand, one hundred thirty-one".

Divisors: 1 31 73 2263 5302837 164387947 387107101 12000320131