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131203103201 = 7123961912491
BaseRepresentation
bin111101000110001010…
…0000111100111100001
3110112122202210012221122
41322030110013213201
54122200443300301
6140135053502025
712323222655602
oct1721424074741
9415582705848
10131203103201
11507088053a5
12215177a1915
13c4ac214611
1464c91a5da9
15362d7b381b
hex1e8c5079e1

131203103201 has 16 divisors (see below), whose sum is σ = 133834291200. Its totient is φ = 128595541200.

The previous prime is 131203103191. The next prime is 131203103257. The reversal of 131203103201 is 102301302131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131203103201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131203103201.

It is not an unprimeable number, because it can be changed into a prime (131203103261) 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, 10497566 + ... + 10510056.

It is an arithmetic number, because the mean of its divisors is an integer number (8364643200).

Almost surely, 2131203103201 is an apocalyptic number.

It is an amenable number.

131203103201 is a deficient number, since it is larger than the sum of its proper divisors (2631187999).

131203103201 is a wasteful number, since it uses less digits than its factorization.

131203103201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13420.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 131203103201 its reverse (102301302131), we get a palindrome (233504405332).

The spelling of 131203103201 in words is "one hundred thirty-one billion, two hundred three million, one hundred three thousand, two hundred one".

Divisors: 1 71 239 619 12491 16969 43949 147941 886861 2985349 7731929 10503811 211959779 548966959 1847931031 131203103201