Base | Representation |
---|---|
bin | 11100001110001001… |
… | …000100100110010111 |
3 | 2220012210121121221222 |
4 | 130032021010212113 |
5 | 444024304431411 |
6 | 21530501400555 |
7 | 2121625002314 |
oct | 341611044627 |
9 | 86183547858 |
10 | 30302030231 |
11 | 1193a7848a0 |
12 | 5a5810915b |
13 | 2b1bb24005 |
14 | 16765c9d0b |
15 | bc53d94db |
hex | 70e244997 |
30302030231 has 4 divisors (see below), whose sum is σ = 33056760264. Its totient is φ = 27547300200.
The previous prime is 30302030221. The next prime is 30302030279. The reversal of 30302030231 is 13203020303.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 30302030231 - 210 = 30302029207 is a prime.
It is a super-2 number, since 2×303020302312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30302030221) 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, 1377365000 + ... + 1377365021.
It is an arithmetic number, because the mean of its divisors is an integer number (8264190066).
Almost surely, 230302030231 is an apocalyptic number.
30302030231 is a deficient number, since it is larger than the sum of its proper divisors (2754730033).
30302030231 is a wasteful number, since it uses less digits than its factorization.
30302030231 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2754730032.
The product of its (nonzero) digits is 324, while the sum is 17.
Adding to 30302030231 its reverse (13203020303), we get a palindrome (43505050534).
The spelling of 30302030231 in words is "thirty billion, three hundred two million, thirty thousand, two hundred thirty-one".
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