Base | Representation |
---|---|
bin | 11110111110100110011… |
… | …100000011010110011011 |
3 | 21112111210210222220000010 |
4 | 132332212130003112123 |
5 | 234334241100330011 |
6 | 4305542513213003 |
7 | 306541451332350 |
oct | 36764634032633 |
9 | 7474723886003 |
10 | 2128801183131 |
11 | 750901852077 |
12 | 2a46ab261163 |
13 | 12598bc6a0bc |
14 | 7506aa56627 |
15 | 3a59598b1a6 |
hex | 1efa670359b |
2128801183131 has 32 divisors (see below), whose sum is σ = 3251085742080. Its totient is φ = 1213761086496.
The previous prime is 2128801183081. The next prime is 2128801183133. The reversal of 2128801183131 is 1313811088212.
It is not a de Polignac number, because 2128801183131 - 29 = 2128801182619 is a prime.
It is a super-2 number, since 2×21288011831312 (a number of 25 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 2128801183131.
It is not an unprimeable number, because it can be changed into a prime (2128801183133) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19971880 + ... + 20078186.
It is an arithmetic number, because the mean of its divisors is an integer number (101596429440).
Almost surely, 22128801183131 is an apocalyptic number.
2128801183131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
2128801183131 is a deficient number, since it is larger than the sum of its proper divisors (1122284558949).
2128801183131 is a wasteful number, since it uses less digits than its factorization.
2128801183131 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 108423.
The product of its (nonzero) digits is 18432, while the sum is 39.
The spelling of 2128801183131 in words is "two trillion, one hundred twenty-eight billion, eight hundred one million, one hundred eighty-three thousand, one hundred thirty-one".
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