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12331142101 = 19649007479
BaseRepresentation
bin10110111101111111…
…00100101111010101
31011211101012220220201
423132333210233111
5200223233021401
65355335100501
7614401656415
oct133677445725
934741186821
1012331142101
115258676633
122481811731
1312169473b5
1484d9ba645
154c2881b01
hex2defe4bd5

12331142101 has 4 divisors (see below), whose sum is σ = 12980149600. Its totient is φ = 11682134604.

The previous prime is 12331142071. The next prime is 12331142129. The reversal of 12331142101 is 10124113321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12331142101 - 211 = 12331140053 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 649007479 = 12331142101 / (1 + 2 + 3 + 3 + 1 + 1 + 4 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331142401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324503721 + ... + 324503758.

It is an arithmetic number, because the mean of its divisors is an integer number (3245037400).

Almost surely, 212331142101 is an apocalyptic number.

It is an amenable number.

12331142101 is a deficient number, since it is larger than the sum of its proper divisors (649007499).

12331142101 is an equidigital number, since it uses as much as digits as its factorization.

12331142101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649007498.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12331142101 its reverse (10124113321), we get a palindrome (22455255422).

The spelling of 12331142101 in words is "twelve billion, three hundred thirty-one million, one hundred forty-two thousand, one hundred one".

Divisors: 1 19 649007479 12331142101