Base | Representation |
---|---|
bin | 1111100110000… |
… | …00100111110001 |
3 | 100010010221212202 |
4 | 13303000213301 |
5 | 231441444101 |
6 | 20551432545 |
7 | 3145613156 |
oct | 763004761 |
9 | 303127782 |
10 | 130812401 |
11 | 67927325 |
12 | 37985755 |
13 | 211414b5 |
14 | 1353222d |
15 | b73e36b |
hex | 7cc09f1 |
130812401 has 4 divisors (see below), whose sum is σ = 131015232. Its totient is φ = 130609572.
The previous prime is 130812391. The next prime is 130812439. The reversal of 130812401 is 104218031.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 130812401 - 210 = 130811377 is a prime.
It is a super-2 number, since 2×1308124012 = 34223768510769602, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130812001) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100445 + ... + 101738.
It is an arithmetic number, because the mean of its divisors is an integer number (32753808).
Almost surely, 2130812401 is an apocalyptic number.
It is an amenable number.
130812401 is a deficient number, since it is larger than the sum of its proper divisors (202831).
130812401 is an equidigital number, since it uses as much as digits as its factorization.
130812401 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 202830.
The product of its (nonzero) digits is 192, while the sum is 20.
The square root of 130812401 is about 11437.3249057636. The cubic root of 130812401 is about 507.6327571348.
The spelling of 130812401 in words is "one hundred thirty million, eight hundred twelve thousand, four hundred one".
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