Base | Representation |
---|---|
bin | 11011111111110010… |
… | …100100000110100011 |
3 | 2212121000112200010001 |
4 | 123333302210012203 |
5 | 443031134431211 |
6 | 21450540520431 |
7 | 2112642254110 |
oct | 337762440643 |
9 | 85530480101 |
10 | 30061248931 |
11 | 1182687828a |
12 | 59ab550117 |
13 | 2ab0c8b67c |
14 | 165262d907 |
15 | bae1c6ac1 |
hex | 6ffca41a3 |
30061248931 has 8 divisors (see below), whose sum is σ = 34380281600. Its totient is φ = 25748358408.
The previous prime is 30061248901. The next prime is 30061248947. The reversal of 30061248931 is 13984216003.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 30061248931 - 29 = 30061248419 is a prime.
It is a super-2 number, since 2×300612489312 (a number of 22 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (30061248901) 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, 1525041 + ... + 1544626.
It is an arithmetic number, because the mean of its divisors is an integer number (4297535200).
Almost surely, 230061248931 is an apocalyptic number.
30061248931 is a deficient number, since it is larger than the sum of its proper divisors (4319032669).
30061248931 is a wasteful number, since it uses less digits than its factorization.
30061248931 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3071073.
The product of its (nonzero) digits is 31104, while the sum is 37.
The spelling of 30061248931 in words is "thirty billion, sixty-one million, two hundred forty-eight thousand, nine hundred thirty-one".
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