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2143104318431 = 83127421148281
BaseRepresentation
bin11111001011111010111…
…110001011101111011111
321120212201121212110000222
4133023322332023233133
5240103034201142211
64320310055111555
7310556060066306
oct37137276135737
97525647773028
102143104318431
1175698157634a
122a74213725bb
1312712b303b7b
1475a264bb43d
153ab314ec1db
hex1f2faf8bbdf

2143104318431 has 16 divisors (see below), whose sum is σ = 2186567405568. Its totient is φ = 2100069921600.

The previous prime is 2143104318403. The next prime is 2143104318479. The reversal of 2143104318431 is 1348134013412.

It is a cyclic number.

It is not a de Polignac number, because 2143104318431 - 26 = 2143104318367 is a prime.

It is a super-2 number, since 2×21431043184312 (a number of 25 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 = 2143104318391 and 2143104318400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143104318401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44364011 + ... + 44412291.

It is an arithmetic number, because the mean of its divisors is an integer number (136660462848).

Almost surely, 22143104318431 is an apocalyptic number.

2143104318431 is a deficient number, since it is larger than the sum of its proper divisors (43463087137).

2143104318431 is a wasteful number, since it uses less digits than its factorization.

2143104318431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52702.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 2143104318431 in words is "two trillion, one hundred forty-three billion, one hundred four million, three hundred eighteen thousand, four hundred thirty-one".

Divisors: 1 83 127 4211 10541 48281 349513 534797 4007323 6131687 44388151 203311291 508930021 16874837153 25820533957 2143104318431