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12320000231 = 711160000003
BaseRepresentation
bin10110111100101010…
…00100100011100111
31011210121020212010212
423132111010203213
5200212410001411
65354300210035
7614205163010
oct133625044347
934717225125
1012320000231
115252356580
122479b3991b
131214545b86
1484c31a007
154c18d068b
hex2de5448e7

12320000231 has 8 divisors (see below), whose sum is σ = 15360000384. Its totient is φ = 9600000120.

The previous prime is 12320000227. The next prime is 12320000257. The reversal of 12320000231 is 13200002321.

It is a happy number.

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 12320000231 - 22 = 12320000227 is a prime.

It is a super-2 number, since 2×123200002312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320000201) 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, 79999925 + ... + 80000078.

It is an arithmetic number, because the mean of its divisors is an integer number (1920000048).

Almost surely, 212320000231 is an apocalyptic number.

12320000231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12320000231 is a deficient number, since it is larger than the sum of its proper divisors (3040000153).

12320000231 is a wasteful number, since it uses less digits than its factorization.

12320000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160000021.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12320000231 its reverse (13200002321), we get a palindrome (25520002552).

It can be divided in two parts, 1 and 2320000231, that added together give a palindrome (2320000232).

The spelling of 12320000231 in words is "twelve billion, three hundred twenty million, two hundred thirty-one", and thus it is an aban number.

Divisors: 1 7 11 77 160000003 1120000021 1760000033 12320000231