Base | Representation |
---|---|
bin | 100111000011011… |
… | …0110110000111111 |
3 | 10101022210020100020 |
4 | 1032012312300333 |
5 | 10140431420111 |
6 | 334010503223 |
7 | 44321246364 |
oct | 11606666077 |
9 | 3338706306 |
10 | 1310420031 |
11 | 612774a68 |
12 | 306a34b13 |
13 | 17b645a8b |
14 | c607446b |
15 | 7a09c906 |
hex | 4e1b6c3f |
1310420031 has 16 divisors (see below), whose sum is σ = 1784332800. Its totient is φ = 855185408.
The previous prime is 1310419997. The next prime is 1310420039. The reversal of 1310420031 is 1300240131.
It is a cyclic number.
It is not a de Polignac number, because 1310420031 - 215 = 1310387263 is a prime.
It is a super-2 number, since 2×13104200312 = 3434401315292081922, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1310420039) 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, 26815 + ... + 57791.
It is an arithmetic number, because the mean of its divisors is an integer number (111520800).
Almost surely, 21310420031 is an apocalyptic number.
1310420031 is a deficient number, since it is larger than the sum of its proper divisors (473912769).
1310420031 is a wasteful number, since it uses less digits than its factorization.
1310420031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 31278.
The product of its (nonzero) digits is 72, while the sum is 15.
The square root of 1310420031 is about 36199.7241840321. The cubic root of 1310420031 is about 1094.3011132120.
Adding to 1310420031 its reverse (1300240131), we get a palindrome (2610660162).
The spelling of 1310420031 in words is "one billion, three hundred ten million, four hundred twenty thousand, thirty-one".
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