Base | Representation |
---|---|
bin | 11101110010010101001111… |
… | …011111000000100101011101 |
3 | 122011211200101202022221220212 |
4 | 131302111033133000211131 |
5 | 114132314331020233341 |
6 | 1142341314223422205 |
7 | 36410406633650222 |
oct | 3562251737004535 |
9 | 564750352287825 |
10 | 131002131024221 |
11 | 38817767821166 |
12 | 12839110754965 |
13 | 58135a91b1ab2 |
14 | 244c773649949 |
15 | 10229ece545eb |
hex | 77254f7c095d |
131002131024221 has 2 divisors, whose sum is σ = 131002131024222. Its totient is φ = 131002131024220.
The previous prime is 131002131024217. The next prime is 131002131024241. The reversal of 131002131024221 is 122420131200131.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 126301859328100 + 4700271696121 = 11238410^2 + 2168011^2 .
It is a cyclic number.
It is not a de Polignac number, because 131002131024221 - 22 = 131002131024217 is a prime.
It is a super-3 number, since 3×1310021310242213 (a number of 43 digits) contains 333 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (131002131024241) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65501065512110 + 65501065512111.
It is an arithmetic number, because the mean of its divisors is an integer number (65501065512111).
Almost surely, 2131002131024221 is an apocalyptic number.
It is an amenable number.
131002131024221 is a deficient number, since it is larger than the sum of its proper divisors (1).
131002131024221 is an equidigital number, since it uses as much as digits as its factorization.
131002131024221 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 576, while the sum is 23.
Adding to 131002131024221 its reverse (122420131200131), we get a palindrome (253422262224352).
The spelling of 131002131024221 in words is "one hundred thirty-one trillion, two billion, one hundred thirty-one million, twenty-four thousand, two hundred twenty-one".
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