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12431244230311 = 919103113120199
BaseRepresentation
bin1011010011100101111111…
…1001010111111010100111
31122000102012210011211021111
42310321133321113322213
53112133142010332221
642234500150325451
72422061551335004
oct264713771277247
948012183154244
1012431244230311
113a63074316945
121489312659887
136c235210266a
1430d9655508ab
151685727b8be1
hexb4e5fe57ea7

12431244230311 has 8 divisors (see below), whose sum is σ = 12456842688000. Its totient is φ = 12405672016920.

The previous prime is 12431244230291. The next prime is 12431244230329. The reversal of 12431244230311 is 11303244213421.

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 12431244230311 - 221 = 12431242133159 is a prime.

It is a super-2 number, since 2×124312442303112 (a number of 27 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 (12431244230411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5612611 + ... + 7507588.

It is an arithmetic number, because the mean of its divisors is an integer number (1557105336000).

Almost surely, 212431244230311 is an apocalyptic number.

12431244230311 is a deficient number, since it is larger than the sum of its proper divisors (25598457689).

12431244230311 is a wasteful number, since it uses less digits than its factorization.

12431244230311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122149.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 12431244230311 its reverse (11303244213421), we get a palindrome (23734488443732).

The spelling of 12431244230311 in words is "twelve trillion, four hundred thirty-one billion, two hundred forty-four million, two hundred thirty thousand, three hundred eleven".

Divisors: 1 919 1031 947489 13120199 12057462881 13526925169 12431244230311