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12333313231 = 19798216731
BaseRepresentation
bin10110111110001111…
…10110110011001111
31011211112022020010221
423133013312303033
5200224312010411
65355453412211
7614426301301
oct133707666317
934745266127
1012333313231
115259919858
12248249a067
1312172276a5
1484ddc3971
154c2b60071
hex2df1f6ccf

12333313231 has 8 divisors (see below), whose sum is σ = 13146771200. Its totient is φ = 11536288920.

The previous prime is 12333313229. The next prime is 12333313273. The reversal of 12333313231 is 13231333321.

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

It is a cyclic number.

It is not a de Polignac number, because 12333313231 - 21 = 12333313229 is a prime.

It is a super-2 number, since 2×123333132312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12333313196 and 12333313205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12333313211) 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 7 ways as a sum of consecutive naturals, for example, 4106865 + ... + 4109866.

It is an arithmetic number, because the mean of its divisors is an integer number (1643346400).

Almost surely, 212333313231 is an apocalyptic number.

12333313231 is a deficient number, since it is larger than the sum of its proper divisors (813457969).

12333313231 is an equidigital number, since it uses as much as digits as its factorization.

12333313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8216829.

The product of its digits is 2916, while the sum is 25.

Adding to 12333313231 its reverse (13231333321), we get a palindrome (25564646552).

The spelling of 12333313231 in words is "twelve billion, three hundred thirty-three million, three hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 19 79 1501 8216731 156117889 649121749 12333313231