Base | Representation |
---|---|
bin | 1110001101001001000001… |
… | …10110011010110000000100 |
3 | 11002121022100100121201010020 |
4 | 13012210200312122300010 |
5 | 13043300103124430233 |
6 | 150234245215455140 |
7 | 6402601000226133 |
oct | 706444066326004 |
9 | 132538310551106 |
10 | 31237848280068 |
11 | 9a53995a92151 |
12 | 36061302274b0 |
13 | 1457941080441 |
14 | 79dcc43b191a |
15 | 39287c6199b3 |
hex | 1c6920d9ac04 |
31237848280068 has 24 divisors (see below), whose sum is σ = 72938964752640. Its totient is φ = 10405380079200.
The previous prime is 31237848280019. The next prime is 31237848280069. The reversal of 31237848280068 is 86008284873213.
It is a junction number, because it is equal to n+sod(n) for n = 31237848279993 and 31237848280020.
It is not an unprimeable number, because it can be changed into a prime (31237848280069) 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, 904483783 + ... + 904518318.
It is an arithmetic number, because the mean of its divisors is an integer number (3039123531360).
Almost surely, 231237848280068 is an apocalyptic number.
It is an amenable number.
31237848280068 is an abundant number, since it is smaller than the sum of its proper divisors (41701116472572).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31237848280068 is a wasteful number, since it uses less digits than its factorization.
31237848280068 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1809003547 (or 1809003545 counting only the distinct ones).
The product of its (nonzero) digits is 24772608, while the sum is 60.
The spelling of 31237848280068 in words is "thirty-one trillion, two hundred thirty-seven billion, eight hundred forty-eight million, two hundred eighty thousand, sixty-eight".
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