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131211244121143 = 1559786911069547
BaseRepresentation
bin11101110101010111111111…
…100110001010110000110111
3122012120200011012111221020111
4131311113333212022300313
5114144231111443334033
61143021340255043451
736431461642646014
oct3565277746126067
9565520135457214
10131211244121143
11388984156aaa1a
1212871750210587
13582a22352c0c4
14245892db8270b
15102818b4957cd
hex7755ff98ac37

131211244121143 has 8 divisors (see below), whose sum is σ = 131297199096960. Its totient is φ = 131125291444920.

The previous prime is 131211244120921. The next prime is 131211244121149. The reversal of 131211244121143 is 341121442112131.

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 131211244121143 - 221 = 131211242023991 is a prime.

It is a super-3 number, since 3×1312112441211433 (a number of 43 digits) contains 333 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 (131211244121149) 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, 122144496 + ... + 123214042.

It is an arithmetic number, because the mean of its divisors is an integer number (16412149887120).

Almost surely, 2131211244121143 is an apocalyptic number.

131211244121143 is a deficient number, since it is larger than the sum of its proper divisors (85954975817).

131211244121143 is a wasteful number, since it uses less digits than its factorization.

131211244121143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149797.

The product of its digits is 4608, while the sum is 31.

Adding to 131211244121143 its reverse (341121442112131), we get a palindrome (472332686233274).

The spelling of 131211244121143 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred forty-four million, one hundred twenty-one thousand, one hundred forty-three".

Divisors: 1 1559 78691 1069547 122679269 1667423773 84163722977 131211244121143