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103211232131 = 7131157716899
BaseRepresentation
bin110000000011111011…
…1100110101110000011
3100212101222010211121002
41200013313212232003
53142334033412011
6115225314522215
710312445666210
oct1400767465603
9325358124532
10103211232131
113a854060357
121800529636b
13996abb18b7
144dd1730b07
152a41105c3b
hex1807de6b83

103211232131 has 16 divisors (see below), whose sum is σ = 119613331200. Its totient is φ = 87232148640.

The previous prime is 103211232119. The next prime is 103211232151. The reversal of 103211232131 is 131232112301.

It is a happy number.

It is not a de Polignac number, because 103211232131 - 226 = 103144123267 is a prime.

It is a super-2 number, since 2×1032112321312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103211232151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214481 + ... + 502418.

It is an arithmetic number, because the mean of its divisors is an integer number (7475833200).

Almost surely, 2103211232131 is an apocalyptic number.

103211232131 is a deficient number, since it is larger than the sum of its proper divisors (16402099069).

103211232131 is a wasteful number, since it uses less digits than its factorization.

103211232131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717194.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 103211232131 its reverse (131232112301), we get a palindrome (234443344432).

The spelling of 103211232131 in words is "one hundred three billion, two hundred eleven million, two hundred thirty-two thousand, one hundred thirty-one".

Divisors: 1 7 131 157 917 1099 20567 143969 716899 5018293 93913769 112553143 657396383 787872001 14744461733 103211232131