Base | Representation |
---|---|
bin | 11000001000010000… |
… | …01100010010010111 |
3 | 1020102210112102101012 |
4 | 30010020030102113 |
5 | 203012231030411 |
6 | 5541232322435 |
7 | 636005346110 |
oct | 140410142227 |
9 | 36383472335 |
10 | 12954158231 |
11 | 55483148a3 |
12 | 26163a341b |
13 | 12b5a411b1 |
14 | 8ac635207 |
15 | 50c3e918b |
hex | 30420c497 |
12954158231 has 16 divisors (see below), whose sum is σ = 15005411904. Its totient is φ = 10953805824.
The previous prime is 12954158207. The next prime is 12954158249. The reversal of 12954158231 is 13285145921.
It is a cyclic number.
It is not a de Polignac number, because 12954158231 - 210 = 12954157207 is a prime.
It is a super-2 number, since 2×129541582312 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12954158291) 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, 182051 + ... + 243003.
It is an arithmetic number, because the mean of its divisors is an integer number (937838244).
Almost surely, 212954158231 is an apocalyptic number.
12954158231 is a deficient number, since it is larger than the sum of its proper divisors (2051253673).
12954158231 is an equidigital number, since it uses as much as digits as its factorization.
12954158231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61370.
The product of its digits is 86400, while the sum is 41.
The spelling of 12954158231 in words is "twelve billion, nine hundred fifty-four million, one hundred fifty-eight thousand, two hundred thirty-one".
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