Base | Representation |
---|---|
bin | 111101000110010111… |
… | …1101100101100101001 |
3 | 110112200021101112022211 |
4 | 1322030233230230221 |
5 | 4122204321123334 |
6 | 140135512445121 |
7 | 12323341266622 |
oct | 1721457545451 |
9 | 415607345284 |
10 | 131210332969 |
11 | 507118a3211 |
12 | 2151a0a97a1 |
13 | c4b08762a1 |
14 | 64ca128a49 |
15 | 362e240a64 |
hex | 1e8cbecb29 |
131210332969 has 2 divisors, whose sum is σ = 131210332970. Its totient is φ = 131210332968.
The previous prime is 131210332921. The next prime is 131210333041. The reversal of 131210332969 is 969233012131.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 120895290000 + 10315042969 = 347700^2 + 101563^2 .
It is an emirp because it is prime and its reverse (969233012131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 131210332969 - 211 = 131210330921 is a prime.
It is a super-2 number, since 2×1312103329692 (a number of 23 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (131210330969) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65605166484 + 65605166485.
It is an arithmetic number, because the mean of its divisors is an integer number (65605166485).
Almost surely, 2131210332969 is an apocalyptic number.
It is an amenable number.
131210332969 is a deficient number, since it is larger than the sum of its proper divisors (1).
131210332969 is an equidigital number, since it uses as much as digits as its factorization.
131210332969 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 52488, while the sum is 40.
The spelling of 131210332969 in words is "one hundred thirty-one billion, two hundred ten million, three hundred thirty-two thousand, nine hundred sixty-nine".
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