Base | Representation |
---|---|
bin | 111101001001111100… |
… | …1000000010010100111 |
3 | 110112222121222001212010 |
4 | 1322103321000102213 |
5 | 4122431013304111 |
6 | 140155434125303 |
7 | 12326325251313 |
oct | 1722371002247 |
9 | 415877861763 |
10 | 131330213031 |
11 | 50773532946 |
12 | 21552280833 |
13 | c4cc65a734 |
14 | 64dc012b43 |
15 | 3639a20aa6 |
hex | 1e93e404a7 |
131330213031 has 8 divisors (see below), whose sum is σ = 175725704320. Its totient is φ = 87244098552.
The previous prime is 131330212943. The next prime is 131330213051. The reversal of 131330213031 is 130312033131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131330213031 - 222 = 131326018727 is a prime.
It is a super-2 number, since 2×1313302130312 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 131330212989 and 131330213007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131330213051) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77343211 + ... + 77344908.
It is an arithmetic number, because the mean of its divisors is an integer number (21965713040).
Almost surely, 2131330213031 is an apocalyptic number.
131330213031 is a deficient number, since it is larger than the sum of its proper divisors (44395491289).
131330213031 is a wasteful number, since it uses less digits than its factorization.
131330213031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 154688405.
The product of its (nonzero) digits is 486, while the sum is 21.
Adding to 131330213031 its reverse (130312033131), we get a palindrome (261642246162).
The spelling of 131330213031 in words is "one hundred thirty-one billion, three hundred thirty million, two hundred thirteen thousand, thirty-one".
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