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12290310143 = 29341946451
BaseRepresentation
bin10110111001000111…
…10011111111111111
31011201112101102222222
423130203303333333
5200132304411033
65351315555555
7613364624666
oct133443637777
934645342888
1012290310143
115237617a11
12246bbbbbbb
13120b34bc87
148483cbddd
154bdeb8598
hex2dc8f3fff

12290310143 has 4 divisors (see below), whose sum is σ = 12332256888. Its totient is φ = 12248363400.

The previous prime is 12290310049. The next prime is 12290310163. The reversal of 12290310143 is 34101309221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34101309221 = 74871615603.

It is a cyclic number.

It is not a de Polignac number, because 12290310143 - 232 = 7995342847 is a prime.

It is a super-2 number, since 2×122903101432 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290310163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20972933 + ... + 20973518.

It is an arithmetic number, because the mean of its divisors is an integer number (3083064222).

Almost surely, 212290310143 is an apocalyptic number.

12290310143 is a deficient number, since it is larger than the sum of its proper divisors (41946745).

12290310143 is an equidigital number, since it uses as much as digits as its factorization.

12290310143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41946744.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 12290310143 its reverse (34101309221), we get a palindrome (46391619364).

The spelling of 12290310143 in words is "twelve billion, two hundred ninety million, three hundred ten thousand, one hundred forty-three".

Divisors: 1 293 41946451 12290310143