Base | Representation |
---|---|
bin | 11100101100100110… |
… | …000011010001101111 |
3 | 2221112101222201011120 |
4 | 130230212003101233 |
5 | 1001101103142341 |
6 | 22053312152023 |
7 | 2140400461302 |
oct | 345446032157 |
9 | 87471881146 |
10 | 30812943471 |
11 | 12082115542 |
12 | 5b7b238613 |
13 | 2ba092a53b |
14 | 16c43c2b39 |
15 | c051ab066 |
hex | 72c98346f |
30812943471 has 8 divisors (see below), whose sum is σ = 41313444480. Its totient is φ = 20427202392.
The previous prime is 30812943463. The next prime is 30812943523. The reversal of 30812943471 is 17434921803.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 30812943471 - 23 = 30812943463 is a prime.
It is a super-3 number, since 3×308129434713 (a number of 32 digits) contains 333 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30812943971) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28689355 + ... + 28690428.
It is an arithmetic number, because the mean of its divisors is an integer number (5164180560).
Almost surely, 230812943471 is an apocalyptic number.
30812943471 is a deficient number, since it is larger than the sum of its proper divisors (10500501009).
30812943471 is a wasteful number, since it uses less digits than its factorization.
30812943471 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57379965.
The product of its (nonzero) digits is 145152, while the sum is 42.
The spelling of 30812943471 in words is "thirty billion, eight hundred twelve million, nine hundred forty-three thousand, four hundred seventy-one".
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