Base | Representation |
---|---|
bin | 111101011110101… |
… | …010110110101111 |
3 | 2122212212002110000 |
4 | 331132222312233 |
5 | 4103022400111 |
6 | 250203315343 |
7 | 34363115643 |
oct | 7536526657 |
9 | 2585762400 |
10 | 1031450031 |
11 | 48a254747 |
12 | 24951bb53 |
13 | 1358cc181 |
14 | 9adb6c23 |
15 | 60844c56 |
hex | 3d7aadaf |
1031450031 has 20 divisors (see below), whose sum is σ = 1541709400. Its totient is φ = 687231216.
The previous prime is 1031450029. The next prime is 1031450033. The reversal of 1031450031 is 1300541301.
It is an interprime number because it is at equal distance from previous prime (1031450029) and next prime (1031450033).
It is not a de Polignac number, because 1031450031 - 21 = 1031450029 is a prime.
It is a super-2 number, since 2×10314500312 = 2127778332899801922, which contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 1031449986 and 1031450013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1031450033) by changing a digit.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 212985 + ... + 217773.
It is an arithmetic number, because the mean of its divisors is an integer number (77085470).
Almost surely, 21031450031 is an apocalyptic number.
1031450031 is a deficient number, since it is larger than the sum of its proper divisors (510259369).
1031450031 is an equidigital number, since it uses as much as digits as its factorization.
1031450031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7460 (or 7451 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 18.
The square root of 1031450031 is about 32116.1957740950. The cubic root of 1031450031 is about 1010.3753240260.
Adding to 1031450031 its reverse (1300541301), we get a palindrome (2331991332).
The spelling of 1031450031 in words is "one billion, thirty-one million, four hundred fifty thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.103 sec. • engine limits •