Base | Representation |
---|---|
bin | 1111100111101… |
… | …01110000001110 |
3 | 100010120000102002 |
4 | 13303311300032 |
5 | 232020430110 |
6 | 21000232302 |
7 | 3150510515 |
oct | 763656016 |
9 | 303500362 |
10 | 131030030 |
11 | 67a6588a |
12 | 37a6b692 |
13 | 211b9581 |
14 | 1358b67c |
15 | b783aa5 |
hex | 7cf5c0e |
131030030 has 32 divisors (see below), whose sum is σ = 242228448. Its totient is φ = 51004800.
The previous prime is 131029993. The next prime is 131030047. The reversal of 131030030 is 30030131.
It is a junction number, because it is equal to n+sod(n) for n = 131029993 and 131030020.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197900 + ... + 198560.
It is an arithmetic number, because the mean of its divisors is an integer number (7569639).
Almost surely, 2131030030 is an apocalyptic number.
131030030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131030030 is a deficient number, since it is larger than the sum of its proper divisors (111198418).
131030030 is a wasteful number, since it uses less digits than its factorization.
131030030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1172.
The product of its (nonzero) digits is 27, while the sum is 11.
The square root of 131030030 is about 11446.8349337273. The cubic root of 131030030 is about 507.9141127248.
Adding to 131030030 its reverse (30030131), we get a palindrome (161060161).
The spelling of 131030030 in words is "one hundred thirty-one million, thirty thousand, thirty".
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