Base | Representation |
---|---|
bin | 10101100011011000… |
… | …001110011011100111 |
3 | 2012201211000002020221 |
4 | 111203120032123213 |
5 | 334343341201211 |
6 | 14344212105211 |
7 | 1446324604636 |
oct | 254330163347 |
9 | 65654002227 |
10 | 23142131431 |
11 | 98a6147961 |
12 | 459a305207 |
13 | 224a6646c3 |
14 | 119772951d |
15 | 906a37c71 |
hex | 56360e6e7 |
23142131431 has 8 divisors (see below), whose sum is σ = 23180899280. Its totient is φ = 23103387648.
The previous prime is 23142131413. The next prime is 23142131437. The reversal of 23142131431 is 13413124132.
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 23142131431 - 29 = 23142130919 is a prime.
It is a super-4 number, since 4×231421314314 (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 23142131396 and 23142131405.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23142131437) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3347080 + ... + 3353986.
It is an arithmetic number, because the mean of its divisors is an integer number (2897612410).
Almost surely, 223142131431 is an apocalyptic number.
23142131431 is a deficient number, since it is larger than the sum of its proper divisors (38767849).
23142131431 is an equidigital number, since it uses as much as digits as its factorization.
23142131431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12033.
The product of its digits is 1728, while the sum is 25.
Adding to 23142131431 its reverse (13413124132), we get a palindrome (36555255563).
The spelling of 23142131431 in words is "twenty-three billion, one hundred forty-two million, one hundred thirty-one thousand, four hundred thirty-one".
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