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12334031231 = 83871470613
BaseRepresentation
bin10110111110010101…
…00110000101111111
31011211120122201001112
423133022212011333
5200230002444411
65355521032235
7614435351504
oct133712460577
934746581045
1012334031231
11525a26a245
12248278567b
131217419442
1485012d4ab
154c2c52b8b
hex2df2a617f

12334031231 has 4 divisors (see below), whose sum is σ = 12335510232. Its totient is φ = 12332552232.

The previous prime is 12334031207. The next prime is 12334031261. The reversal of 12334031231 is 13213043321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13213043321 = 42131384901.

It is a cyclic number.

It is not a de Polignac number, because 12334031231 - 210 = 12334030207 is a prime.

It is a super-2 number, since 2×123340312312 (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 = 12334031197 and 12334031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12334031261) 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, 726920 + ... + 743693.

It is an arithmetic number, because the mean of its divisors is an integer number (3083877558).

Almost surely, 212334031231 is an apocalyptic number.

12334031231 is a deficient number, since it is larger than the sum of its proper divisors (1479001).

12334031231 is an equidigital number, since it uses as much as digits as its factorization.

12334031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479000.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 12334031231 its reverse (13213043321), we get a palindrome (25547074552).

The spelling of 12334031231 in words is "twelve billion, three hundred thirty-four million, thirty-one thousand, two hundred thirty-one".

Divisors: 1 8387 1470613 12334031231