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12131311002 = 2315831277249
BaseRepresentation
bin10110100110001010…
…10001110110011010
31011022110012110011220
423103011101312122
5144321103423002
65323440032510
7606424304436
oct132305216632
934273173156
1012131311002
115165899568
122426902736
1311b441bc45
1483123d9c6
154b005c7bc
hex2d3151d9a

12131311002 has 16 divisors (see below), whose sum is σ = 24277968000. Its totient is φ = 4041212672.

The previous prime is 12131310991. The next prime is 12131311013. The reversal of 12131311002 is 20011313121.

It is a happy number.

12131311002 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12131310991) and next prime (12131311013).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 629127 + ... + 648122.

It is an arithmetic number, because the mean of its divisors is an integer number (1517373000).

Almost surely, 212131311002 is an apocalyptic number.

12131311002 is an abundant number, since it is smaller than the sum of its proper divisors (12146656998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131311002 is a wasteful number, since it uses less digits than its factorization.

12131311002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278837.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12131311002 its reverse (20011313121), we get a palindrome (32142624123).

The spelling of 12131311002 in words is "twelve billion, one hundred thirty-one million, three hundred eleven thousand, two".

Divisors: 1 2 3 6 1583 3166 4749 9498 1277249 2554498 3831747 7663494 2021885167 4043770334 6065655501 12131311002