Base | Representation |
---|---|
bin | 111001010101100011… |
… | …1110010110011110111 |
3 | 102202211010212200022112 |
4 | 1302223013302303313 |
5 | 4004132242000401 |
6 | 132322023521235 |
7 | 11616163666145 |
oct | 1625307626367 |
9 | 382733780275 |
10 | 123130031351 |
11 | 48245768a98 |
12 | 1ba43bb921b |
13 | b7c37c8722 |
14 | 5d60d1a595 |
15 | 3309b823bb |
hex | 1cab1f2cf7 |
123130031351 has 2 divisors, whose sum is σ = 123130031352. Its totient is φ = 123130031350.
The previous prime is 123130031333. The next prime is 123130031363. The reversal of 123130031351 is 153130031321.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 123130031351 - 214 = 123130014967 is a prime.
It is a super-2 number, since 2×1231300313512 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (123130031251) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61565015675 + 61565015676.
It is an arithmetic number, because the mean of its divisors is an integer number (61565015676).
Almost surely, 2123130031351 is an apocalyptic number.
123130031351 is a deficient number, since it is larger than the sum of its proper divisors (1).
123130031351 is an equidigital number, since it uses as much as digits as its factorization.
123130031351 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 810, while the sum is 23.
Adding to 123130031351 its reverse (153130031321), we get a palindrome (276260062672).
The spelling of 123130031351 in words is "one hundred twenty-three billion, one hundred thirty million, thirty-one thousand, three hundred fifty-one".
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