Base | Representation |
---|---|
bin | 11101001101101100… |
… | …011010001000100111 |
3 | 2222222002220121121120 |
4 | 131031230122020213 |
5 | 1003220233224322 |
6 | 22224350345023 |
7 | 2160222536325 |
oct | 351554321047 |
9 | 88862817546 |
10 | 31368258087 |
11 | 12337622641 |
12 | 60b51bb173 |
13 | 2c5b9aba7a |
14 | 1738056d15 |
15 | c38ceda5c |
hex | 74db1a227 |
31368258087 has 8 divisors (see below), whose sum is σ = 41918757504. Its totient is φ = 20864965368.
The previous prime is 31368258049. The next prime is 31368258091. The reversal of 31368258087 is 78085286313.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 31368258087 - 231 = 29220774439 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31368258017) 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, 11800123 + ... + 11802780.
It is an arithmetic number, because the mean of its divisors is an integer number (5239844688).
Almost surely, 231368258087 is an apocalyptic number.
31368258087 is a deficient number, since it is larger than the sum of its proper divisors (10550499417).
31368258087 is a wasteful number, since it uses less digits than its factorization.
31368258087 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23603349.
The product of its (nonzero) digits is 1935360, while the sum is 51.
The spelling of 31368258087 in words is "thirty-one billion, three hundred sixty-eight million, two hundred fifty-eight thousand, eighty-seven".
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