Base | Representation |
---|---|
bin | 1111101001101… |
… | …11110001000101 |
3 | 100011001202022120 |
4 | 13310313301011 |
5 | 232103103141 |
6 | 21010120153 |
7 | 3153015030 |
oct | 764676105 |
9 | 304052276 |
10 | 131300421 |
11 | 6812aa4a |
12 | 37b80059 |
13 | 21282675 |
14 | 1361c017 |
15 | b7d8c66 |
hex | 7d37c45 |
131300421 has 8 divisors (see below), whose sum is σ = 200076864. Its totient is φ = 75028800.
The previous prime is 131300417. The next prime is 131300437. The reversal of 131300421 is 124003131.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 131300421 - 22 = 131300417 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 131300421.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131300441) 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, 3126180 + ... + 3126221.
It is an arithmetic number, because the mean of its divisors is an integer number (25009608).
Almost surely, 2131300421 is an apocalyptic number.
It is an amenable number.
131300421 is a deficient number, since it is larger than the sum of its proper divisors (68776443).
131300421 is an equidigital number, since it uses as much as digits as its factorization.
131300421 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6252411.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 131300421 is about 11458.6395789378. The cubic root of 131300421 is about 508.2632465467.
Adding to 131300421 its reverse (124003131), we get a palindrome (255303552).
The spelling of 131300421 in words is "one hundred thirty-one million, three hundred thousand, four hundred twenty-one".
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