Base | Representation |
---|---|
bin | 11100111011000011… |
… | …001000111111000111 |
3 | 2222011022022022122220 |
4 | 130323003020333013 |
5 | 1002100143400210 |
6 | 22133334023423 |
7 | 2146403653500 |
oct | 347303107707 |
9 | 88138268586 |
10 | 31055450055 |
11 | 12196aa0303 |
12 | 60284a7b73 |
13 | 2c0bc48266 |
14 | 17086abba7 |
15 | c1b60ec70 |
hex | 73b0c8fc7 |
31055450055 has 96 divisors (see below), whose sum is σ = 58802112000. Its totient is φ = 13952252160.
The previous prime is 31055450053. The next prime is 31055450059. The reversal of 31055450055 is 55005455013.
It is not a de Polignac number, because 31055450055 - 21 = 31055450053 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 31055449998 and 31055450025.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31055450053) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20716696 + ... + 20718194.
It is an arithmetic number, because the mean of its divisors is an integer number (612522000).
Almost surely, 231055450055 is an apocalyptic number.
31055450055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.
31055450055 is a deficient number, since it is larger than the sum of its proper divisors (27746661945).
31055450055 is a wasteful number, since it uses less digits than its factorization.
31055450055 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1989 (or 1982 counting only the distinct ones).
The product of its (nonzero) digits is 37500, while the sum is 33.
The spelling of 31055450055 in words is "thirty-one billion, fifty-five million, four hundred fifty thousand, fifty-five".
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