Base | Representation |
---|---|
bin | 101111100010111010… |
… | …0100001111110101111 |
3 | 100202112202001102021120 |
4 | 1133011310201332233 |
5 | 3133101400130111 |
6 | 114523332232023 |
7 | 10243132166640 |
oct | 1370564417657 |
9 | 322482042246 |
10 | 102103130031 |
11 | 3a3356118a1 |
12 | 1795616b613 |
13 | 9822455196 |
14 | 4d284c36c7 |
15 | 29c8bbe406 |
hex | 17c5d21faf |
102103130031 has 16 divisors (see below), whose sum is σ = 163774444800. Its totient is φ = 55273874688.
The previous prime is 102103130021. The next prime is 102103130057. The reversal of 102103130031 is 130031301201.
It is not a de Polignac number, because 102103130031 - 227 = 101968912303 is a prime.
It is a super-2 number, since 2×1021031300312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (102103130021) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127948386 + ... + 127949183.
It is an arithmetic number, because the mean of its divisors is an integer number (10235902800).
Almost surely, 2102103130031 is an apocalyptic number.
102103130031 is a deficient number, since it is larger than the sum of its proper divisors (61671314769).
102103130031 is a wasteful number, since it uses less digits than its factorization.
102103130031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 255897598.
The product of its (nonzero) digits is 54, while the sum is 15.
Adding to 102103130031 its reverse (130031301201), we get a palindrome (232134431232).
The spelling of 102103130031 in words is "one hundred two billion, one hundred three million, one hundred thirty thousand, thirty-one".
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