Base | Representation |
---|---|
bin | 11100110111111011… |
… | …000011110101000011 |
3 | 2222000122121120220010 |
4 | 130313323003311003 |
5 | 1001443232001011 |
6 | 22124221520003 |
7 | 2145166103325 |
oct | 346773036503 |
9 | 88018546803 |
10 | 31003000131 |
11 | 1216a426964 |
12 | 6012a13003 |
13 | 2c011129bc |
14 | 1701737615 |
15 | c16bee1a6 |
hex | 737ec3d43 |
31003000131 has 16 divisors (see below), whose sum is σ = 43522070400. Its totient is φ = 19576752768.
The previous prime is 31003000117. The next prime is 31003000163. The reversal of 31003000131 is 13100030013.
It is not a de Polignac number, because 31003000131 - 29 = 31002999619 is a prime.
It is a super-2 number, since 2×310030001312 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (31003000331) 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, 231220 + ... + 339806.
It is an arithmetic number, because the mean of its divisors is an integer number (2720129400).
Almost surely, 231003000131 is an apocalyptic number.
31003000131 is a deficient number, since it is larger than the sum of its proper divisors (12519070269).
31003000131 is a wasteful number, since it uses less digits than its factorization.
31003000131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 113618.
The product of its (nonzero) digits is 27, while the sum is 12.
Adding to 31003000131 its reverse (13100030013), we get a palindrome (44103030144).
The spelling of 31003000131 in words is "thirty-one billion, three million, one hundred thirty-one", and thus it is an aban number.
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