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124144131311 = 254534877387
BaseRepresentation
bin111001110011110010…
…0010001110011101111
3102212102211002021221022
41303213210101303233
54013221344200221
6133010411324355
711653256463614
oct1634744216357
9385384067838
10124144131311
1148716142332
12200877506bb
13b925931685
14601989850b
153368beb4ab
hex1ce7911cef

124144131311 has 4 divisors (see below), whose sum is σ = 124149034152. Its totient is φ = 124139228472.

The previous prime is 124144131301. The next prime is 124144131317. The reversal of 124144131311 is 113131441421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113131441421 = 201156256311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-124144131311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124144131317) 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, 2413241 + ... + 2464146.

It is an arithmetic number, because the mean of its divisors is an integer number (31037258538).

Almost surely, 2124144131311 is an apocalyptic number.

124144131311 is a deficient number, since it is larger than the sum of its proper divisors (4902841).

124144131311 is an equidigital number, since it uses as much as digits as its factorization.

124144131311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4902840.

The product of its digits is 1152, while the sum is 26.

Adding to 124144131311 its reverse (113131441421), we get a palindrome (237275572732).

The spelling of 124144131311 in words is "one hundred twenty-four billion, one hundred forty-four million, one hundred thirty-one thousand, three hundred eleven".

Divisors: 1 25453 4877387 124144131311