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12420211323 = 313318466957
BaseRepresentation
bin10111001000100110…
…10110001001111011
31012001120211002220210
423210103112021323
5200414033230243
65412240122203
7616533024432
oct134423261173
935046732823
1012420211323
1152a3981663
1224a7606363
13122c231790
1485b764119
154ca5c7933
hex2e44d627b

12420211323 has 8 divisors (see below), whose sum is σ = 17834149648. Its totient is φ = 7643206944.

The previous prime is 12420211283. The next prime is 12420211343. The reversal of 12420211323 is 32311202421.

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

It is not a de Polignac number, because 12420211323 - 26 = 12420211259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12420211323.

It is not an unprimeable number, because it can be changed into a prime (12420211343) 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, 159233440 + ... + 159233517.

It is an arithmetic number, because the mean of its divisors is an integer number (2229268706).

Almost surely, 212420211323 is an apocalyptic number.

12420211323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12420211323 is a deficient number, since it is larger than the sum of its proper divisors (5413938325).

12420211323 is a wasteful number, since it uses less digits than its factorization.

12420211323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318466973.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12420211323 its reverse (32311202421), we get a palindrome (44731413744).

The spelling of 12420211323 in words is "twelve billion, four hundred twenty million, two hundred eleven thousand, three hundred twenty-three".

Divisors: 1 3 13 39 318466957 955400871 4140070441 12420211323