Base | Representation |
---|---|
bin | 111101000111101001… |
… | …1010000011110100101 |
3 | 110112210021001212011212 |
4 | 1322033103100132211 |
5 | 4122301310141442 |
6 | 140144043441205 |
7 | 12324401603621 |
oct | 1721723203645 |
9 | 415707055155 |
10 | 131253208997 |
11 | 50734018649 |
12 | 21530526205 |
13 | c4b9708c11 |
14 | 64d1aca181 |
15 | 3632daea82 |
hex | 1e8f4d07a5 |
131253208997 has 2 divisors, whose sum is σ = 131253208998. Its totient is φ = 131253208996.
The previous prime is 131253208981. The next prime is 131253209039. The reversal of 131253208997 is 799802352131.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 130408376641 + 844832356 = 361121^2 + 29066^2 .
It is a cyclic number.
It is not a de Polignac number, because 131253208997 - 24 = 131253208981 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131253208297) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65626604498 + 65626604499.
It is an arithmetic number, because the mean of its divisors is an integer number (65626604499).
Almost surely, 2131253208997 is an apocalyptic number.
It is an amenable number.
131253208997 is a deficient number, since it is larger than the sum of its proper divisors (1).
131253208997 is an equidigital number, since it uses as much as digits as its factorization.
131253208997 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 816480, while the sum is 50.
The spelling of 131253208997 in words is "one hundred thirty-one billion, two hundred fifty-three million, two hundred eight thousand, nine hundred ninety-seven".
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