Base | Representation |
---|---|
bin | 11101001000011000… |
… | …110111001010000001 |
3 | 2222201220102102201201 |
4 | 131020120313022001 |
5 | 1003024441414001 |
6 | 22211450501201 |
7 | 2155062135601 |
oct | 351030671201 |
9 | 88656372651 |
10 | 31279248001 |
11 | 122a1357a91 |
12 | 608b434801 |
13 | 2c46415591 |
14 | 172a2c6c01 |
15 | c310ba501 |
hex | 748637281 |
31279248001 has 8 divisors (see below), whose sum is σ = 31510179360. Its totient is φ = 31048792992.
The previous prime is 31279247981. The next prime is 31279248017. The reversal of 31279248001 is 10084297213.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 31279248001 - 213 = 31279239809 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (31279240001) 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, 13266 + ... + 250468.
It is an arithmetic number, because the mean of its divisors is an integer number (3938772420).
Almost surely, 231279248001 is an apocalyptic number.
It is an amenable number.
31279248001 is a deficient number, since it is larger than the sum of its proper divisors (230931359).
31279248001 is a wasteful number, since it uses less digits than its factorization.
31279248001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 238175.
The product of its (nonzero) digits is 24192, while the sum is 37.
The spelling of 31279248001 in words is "thirty-one billion, two hundred seventy-nine million, two hundred forty-eight thousand, one".
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