Base | Representation |
---|---|
bin | 111101011010101… |
… | …111011100000111 |
3 | 2122210220202211021 |
4 | 331122233130013 |
5 | 4102241421411 |
6 | 250125252011 |
7 | 34351266421 |
oct | 7532573407 |
9 | 2583822737 |
10 | 1030420231 |
11 | 489710a75 |
12 | 249104007 |
13 | 13562b519 |
14 | 9abc9811 |
15 | 606dea71 |
hex | 3d6af707 |
1030420231 has 4 divisors (see below), whose sum is σ = 1044933264. Its totient is φ = 1015907200.
The previous prime is 1030420211. The next prime is 1030420267. The reversal of 1030420231 is 1320240301.
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1320240301 = 103 ⋅12817867.
It is a cyclic number.
It is not a de Polignac number, because 1030420231 - 229 = 493549319 is a prime.
It is a super-2 number, since 2×10304202312 = 2123531704908186722, 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 (1030420211) 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 3 ways as a sum of consecutive naturals, for example, 7256410 + ... + 7256551.
It is an arithmetic number, because the mean of its divisors is an integer number (261233316).
Almost surely, 21030420231 is an apocalyptic number.
1030420231 is a deficient number, since it is larger than the sum of its proper divisors (14513033).
1030420231 is an equidigital number, since it uses as much as digits as its factorization.
1030420231 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14513032.
The product of its (nonzero) digits is 144, while the sum is 16.
The square root of 1030420231 is about 32100.1593609751. The cubic root of 1030420231 is about 1010.0389590566.
Adding to 1030420231 its reverse (1320240301), we get a palindrome (2350660532).
The spelling of 1030420231 in words is "one billion, thirty million, four hundred twenty thousand, two hundred thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •