Base | Representation |
---|---|
bin | 111101011110000… |
… | …110001110111111 |
3 | 2122212120110200110 |
4 | 331132012032333 |
5 | 4103003100111 |
6 | 250200201103 |
7 | 34361622426 |
oct | 7536061677 |
9 | 2585513613 |
10 | 1031300031 |
11 | 48a161a83 |
12 | 249469193 |
13 | 135878b08 |
14 | 9ad782bd |
15 | 608155a6 |
hex | 3d7863bf |
1031300031 has 16 divisors (see below), whose sum is σ = 1449203840. Its totient is φ = 650553120.
The previous prime is 1031300029. The next prime is 1031300051. The reversal of 1031300031 is 1300031301.
It is not a de Polignac number, because 1031300031 - 21 = 1031300029 is a prime.
It is a super-2 number, since 2×10313000312 = 2127159507881201922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1031300051) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38016 + ... + 59226.
It is an arithmetic number, because the mean of its divisors is an integer number (90575240).
Almost surely, 21031300031 is an apocalyptic number.
1031300031 is a deficient number, since it is larger than the sum of its proper divisors (417903809).
1031300031 is a wasteful number, since it uses less digits than its factorization.
1031300031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22086.
The product of its (nonzero) digits is 27, while the sum is 12.
The square root of 1031300031 is about 32113.8604188285. The cubic root of 1031300031 is about 1010.3263432574.
Adding to 1031300031 its reverse (1300031301), we get a palindrome (2331331332).
The spelling of 1031300031 in words is "one billion, thirty-one million, three hundred thousand, thirty-one".
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