Base | Representation |
---|---|
bin | 11100001000010100… |
… | …101110000010000111 |
3 | 2212221222221112012210 |
4 | 130020110232002013 |
5 | 443324312421411 |
6 | 21513053314503 |
7 | 2116331223126 |
oct | 341024560207 |
9 | 85858845183 |
10 | 30204420231 |
11 | 1189a675a77 |
12 | 5a2b495a33 |
13 | 2b0483930b |
14 | 166765babd |
15 | bbba57ca6 |
hex | 70852e087 |
30204420231 has 4 divisors (see below), whose sum is σ = 40272560312. Its totient is φ = 20136280152.
The previous prime is 30204420229. The next prime is 30204420241. The reversal of 30204420231 is 13202440203.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 30204420231 - 21 = 30204420229 is a prime.
It is a super-2 number, since 2×302044202312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 30204420198 and 30204420207.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30204420241) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5034070036 + ... + 5034070041.
It is an arithmetic number, because the mean of its divisors is an integer number (10068140078).
Almost surely, 230204420231 is an apocalyptic number.
30204420231 is a deficient number, since it is larger than the sum of its proper divisors (10068140081).
30204420231 is a wasteful number, since it uses less digits than its factorization.
30204420231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10068140080.
The product of its (nonzero) digits is 1152, while the sum is 21.
Adding to 30204420231 its reverse (13202440203), we get a palindrome (43406860434).
The spelling of 30204420231 in words is "thirty billion, two hundred four million, four hundred twenty thousand, two hundred thirty-one".
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