Base | Representation |
---|---|
bin | 1111100111100… |
… | …01000111010110 |
3 | 100010112001100101 |
4 | 13303301013112 |
5 | 232014323110 |
6 | 21000004314 |
7 | 3150401233 |
oct | 763610726 |
9 | 303461311 |
10 | 131011030 |
11 | 67a52587 |
12 | 37a6069a |
13 | 211b0a27 |
14 | 1358478a |
15 | b77d13a |
hex | 7cf11d6 |
131011030 has 16 divisors (see below), whose sum is σ = 236196000. Its totient is φ = 52320832.
The previous prime is 131011021. The next prime is 131011033. The reversal of 131011030 is 30110131.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a junction number, because it is equal to n+sod(n) for n = 131010998 and 131011016.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131011033) 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, 3655 + ... + 16594.
It is an arithmetic number, because the mean of its divisors is an integer number (14762250).
Almost surely, 2131011030 is an apocalyptic number.
131011030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131011030 is a deficient number, since it is larger than the sum of its proper divisors (105184970).
131011030 is a wasteful number, since it uses less digits than its factorization.
131011030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20903.
The product of its (nonzero) digits is 9, while the sum is 10.
The square root of 131011030 is about 11446.0049799046. The cubic root of 131011030 is about 507.8895615217.
Adding to 131011030 its reverse (30110131), we get a palindrome (161121161).
The spelling of 131011030 in words is "one hundred thirty-one million, eleven thousand, thirty".
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