Base | Representation |
---|---|
bin | 1110001110001111000111… |
… | …00011100011100011101010 |
3 | 11002201220110121020101002012 |
4 | 13013013203203203203222 |
5 | 13044404133001142030 |
6 | 150303431003035522 |
7 | 6405402263023010 |
oct | 707074343434352 |
9 | 132656417211065 |
10 | 31275474630890 |
11 | 9a68944096456 |
12 | 361149120bba2 |
13 | 145b359442059 |
14 | 7a1a5361c8b0 |
15 | 393830a33095 |
hex | 1c71e38e38ea |
31275474630890 has 32 divisors (see below), whose sum is σ = 64340797996800. Its totient is φ = 10722573414144.
The previous prime is 31275474630853. The next prime is 31275474630893. The reversal of 31275474630890 is 9803647457213.
It is not an unprimeable number, because it can be changed into a prime (31275474630893) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7605782 + ... + 10972641.
It is an arithmetic number, because the mean of its divisors is an integer number (2010649937400).
It is a 1-persistent number, because it is pandigital, but 2⋅31275474630890 = 62550949261780 is not.
Almost surely, 231275474630890 is an apocalyptic number.
31275474630890 is an abundant number, since it is smaller than the sum of its proper divisors (33065323365910).
31275474630890 is a wasteful number, since it uses less digits than its factorization.
31275474630890 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18602486.
The product of its (nonzero) digits is 30481920, while the sum is 59.
The spelling of 31275474630890 in words is "thirty-one trillion, two hundred seventy-five billion, four hundred seventy-four million, six hundred thirty thousand, eight hundred ninety".
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