Base | Representation |
---|---|
bin | 11100001111110111… |
… | …011110011101000111 |
3 | 2220021211002000120102 |
4 | 130033313132131013 |
5 | 444104212100400 |
6 | 21533413554315 |
7 | 2122426002503 |
oct | 341767363507 |
9 | 86254060512 |
10 | 30330971975 |
11 | 11955052197 |
12 | 5a6594599b |
13 | 2b24b183c5 |
14 | 167a3a1303 |
15 | bc7c049d5 |
hex | 70fdde747 |
30330971975 has 12 divisors (see below), whose sum is σ = 37615683960. Its totient is φ = 24261372000.
The previous prime is 30330971939. The next prime is 30330971987. The reversal of 30330971975 is 57917903303.
It is a happy number.
It is not a de Polignac number, because 30330971975 - 234 = 13151102791 is a prime.
It is a congruent number.
It is an unprimeable number.
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 in 11 ways as a sum of consecutive naturals, for example, 104861 + ... + 267689.
It is an arithmetic number, because the mean of its divisors is an integer number (3134640330).
Almost surely, 230330971975 is an apocalyptic number.
30330971975 is a deficient number, since it is larger than the sum of its proper divisors (7284711985).
30330971975 is a wasteful number, since it uses less digits than its factorization.
30330971975 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 170290 (or 170285 counting only the distinct ones).
The product of its (nonzero) digits is 535815, while the sum is 47.
The spelling of 30330971975 in words is "thirty billion, three hundred thirty million, nine hundred seventy-one thousand, nine hundred seventy-five".
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