Base | Representation |
---|---|
bin | 1111011111110… |
… | …10011000101111 |
3 | 100001121201001210 |
4 | 13233322120233 |
5 | 231240003211 |
6 | 20522205503 |
7 | 3135662001 |
oct | 757723057 |
9 | 301551053 |
10 | 130000431 |
11 | 67422280 |
12 | 37653893 |
13 | 20c18a42 |
14 | 133a0371 |
15 | b62d9a6 |
hex | 7bfa62f |
130000431 has 16 divisors (see below), whose sum is σ = 191220480. Its totient is φ = 77901120.
The previous prime is 130000421. The next prime is 130000447. The reversal of 130000431 is 134000031.
It is not a de Polignac number, because 130000431 - 211 = 129998383 is a prime.
It is a super-2 number, since 2×1300004312 = 33800224120371522, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130000421) 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 15 ways as a sum of consecutive naturals, for example, 19195 + ... + 25068.
It is an arithmetic number, because the mean of its divisors is an integer number (11951280).
Almost surely, 2130000431 is an apocalyptic number.
130000431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
130000431 is a deficient number, since it is larger than the sum of its proper divisors (61220049).
130000431 is a wasteful number, since it uses less digits than its factorization.
130000431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44366.
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 130000431 is about 11401.7731515760. The cubic root of 130000431 is about 506.5802617450.
Adding to 130000431 its reverse (134000031), we get a palindrome (264000462).
The spelling of 130000431 in words is "one hundred thirty million, four hundred thirty-one", and thus it is an aban number.
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