Base | Representation |
---|---|
bin | 1101011101000110111… |
… | …1011110111101010101 |
3 | 211002122101112222211211 |
4 | 3113101233132331111 |
5 | 12241344422334110 |
6 | 254105000501421 |
7 | 22462110606526 |
oct | 3272157367525 |
9 | 732571488754 |
10 | 231152152405 |
11 | 8a0384003a9 |
12 | 3897047a871 |
13 | 18a4a2c4c55 |
14 | b28b56284d |
15 | 602d2d698a |
hex | 35d1bdef55 |
231152152405 has 16 divisors (see below), whose sum is σ = 277723763568. Its totient is φ = 184694400000.
The previous prime is 231152152391. The next prime is 231152152411. The reversal of 231152152405 is 504251251132.
It can be written as a sum of positive squares in 8 ways, for example, as 22048983121 + 209103169284 = 148489^2 + 457278^2 .
It is not a de Polignac number, because 231152152405 - 25 = 231152152373 is a prime.
It is a super-2 number, since 2×2311521524052 (a number of 24 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19095855 + ... + 19107955.
It is an arithmetic number, because the mean of its divisors is an integer number (17357735223).
Almost surely, 2231152152405 is an apocalyptic number.
It is an amenable number.
231152152405 is a deficient number, since it is larger than the sum of its proper divisors (46571611163).
231152152405 is a wasteful number, since it uses less digits than its factorization.
231152152405 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 16488.
The product of its (nonzero) digits is 12000, while the sum is 31.
The spelling of 231152152405 in words is "two hundred thirty-one billion, one hundred fifty-two million, one hundred fifty-two thousand, four hundred five".
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