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12313421111 = 131613153337
BaseRepresentation
bin10110111011110111…
…11110010100110111
31011210010212121021202
423131323332110313
5200204213433421
65353503203115
7614065231625
oct133573762467
934703777252
1012313421111
115249672592
1224778a649b
1312130813c4
1484b4c6515
154c103110b
hex2ddefe537

12313421111 has 8 divisors (see below), whose sum is σ = 12427738224. Its totient is φ = 12199412160.

The previous prime is 12313421077. The next prime is 12313421129. The reversal of 12313421111 is 11112431321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12313421111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313421191) 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, 3635 + ... + 156971.

It is an arithmetic number, because the mean of its divisors is an integer number (1553467278).

Almost surely, 212313421111 is an apocalyptic number.

12313421111 is a deficient number, since it is larger than the sum of its proper divisors (114317113).

12313421111 is a wasteful number, since it uses less digits than its factorization.

12313421111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154081.

The product of its digits is 144, while the sum is 20.

Adding to 12313421111 its reverse (11112431321), we get a palindrome (23425852432).

The spelling of 12313421111 in words is "twelve billion, three hundred thirteen million, four hundred twenty-one thousand, one hundred eleven".

Divisors: 1 131 613 80303 153337 20087147 93995581 12313421111