Base | Representation |
---|---|
bin | 11100001010000011… |
… | …000000101011001111 |
3 | 2220001000100102022000 |
4 | 130022003000223033 |
5 | 443404213114211 |
6 | 21520005123343 |
7 | 2120132041221 |
oct | 341203005317 |
9 | 86030312260 |
10 | 30233332431 |
11 | 11904a23155 |
12 | 5a390b9553 |
13 | 2b0a820123 |
14 | 166b426411 |
15 | bbe369656 |
hex | 70a0c0acf |
30233332431 has 16 divisors (see below), whose sum is σ = 45049031520. Its totient is φ = 20039045760.
The previous prime is 30233332369. The next prime is 30233332453. The reversal of 30233332431 is 13423333203.
It is a happy number.
30233332431 is a `hidden beast` number, since 3 + 0 + 2 + 333 + 324 + 3 + 1 = 666.
It is not a de Polignac number, because 30233332431 - 213 = 30233324239 is a prime.
It is a super-2 number, since 2×302333324312 (a number of 22 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a junction number, because it is equal to n+sod(n) for n = 30233332395 and 30233332404.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30233332231) 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, 3231610 + ... + 3240951.
It is an arithmetic number, because the mean of its divisors is an integer number (2815564470).
Almost surely, 230233332431 is an apocalyptic number.
30233332431 is a deficient number, since it is larger than the sum of its proper divisors (14815699089).
30233332431 is a wasteful number, since it uses less digits than its factorization.
30233332431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6472743 (or 6472737 counting only the distinct ones).
The product of its (nonzero) digits is 11664, while the sum is 27.
Adding to 30233332431 its reverse (13423333203), we get a palindrome (43656665634).
The spelling of 30233332431 in words is "thirty billion, two hundred thirty-three million, three hundred thirty-two thousand, four hundred thirty-one".
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