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12310303131 = 34730677079
BaseRepresentation
bin10110111011100000…
…00101000110011011
31011202221000012020000
423131300011012123
5200202414200011
65353312304043
7614026564410
oct133560050633
934687005200
1012310303131
115247932a45
122476842023
13121252c149
1484ad14107
154c0b17356
hex2ddc0519b

12310303131 has 40 divisors (see below), whose sum is σ = 21026353920. Its totient is φ = 7031171952.

The previous prime is 12310303123. The next prime is 12310303151. The reversal of 12310303131 is 13130301321.

It is a happy number.

12310303131 is a `hidden beast` number, since 1 + 231 + 0 + 303 + 131 = 666.

12310303131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12310303131 - 23 = 12310303123 is a prime.

It is a super-2 number, since 2×123103031312 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12310303111) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 1735450 + ... + 1742528.

It is an arithmetic number, because the mean of its divisors is an integer number (525658848).

Almost surely, 212310303131 is an apocalyptic number.

12310303131 is a deficient number, since it is larger than the sum of its proper divisors (8716050789).

12310303131 is an equidigital number, since it uses as much as digits as its factorization.

12310303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10165 (or 10156 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 12310303131 its reverse (13130301321), we get a palindrome (25440604452).

The spelling of 12310303131 in words is "twelve billion, three hundred ten million, three hundred three thousand, one hundred thirty-one".

Divisors: 1 3 7 9 21 27 63 81 189 567 3067 7079 9201 21237 21469 27603 49553 63711 64407 82809 148659 191133 193221 248427 445977 573399 579663 1337931 1738989 4013793 21711293 65133879 151979051 195401637 455937153 586204911 1367811459 1758614733 4103434377 12310303131