Base | Representation |
---|---|
bin | 11100000011111101… |
… | …001001101001100111 |
3 | 2212202220001011002001 |
4 | 130003331021221213 |
5 | 443202032224111 |
6 | 21501514430131 |
7 | 2114451255616 |
oct | 340375115147 |
9 | 85686034061 |
10 | 30131133031 |
11 | 1186226a23a |
12 | 5a0aa32347 |
13 | 2ac25b94cc |
14 | 165ba2187d |
15 | bb53cd1c1 |
hex | 703f49a67 |
30131133031 has 8 divisors (see below), whose sum is σ = 30575546144. Its totient is φ = 29687575680.
The previous prime is 30131132959. The next prime is 30131133041. The reversal of 30131133031 is 13033113103.
It is a happy number.
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 30131133031 - 229 = 29594262119 is a prime.
It is a super-2 number, since 2×301311330312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30131133041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142830 + ... + 284011.
It is an arithmetic number, because the mean of its divisors is an integer number (3821943268).
Almost surely, 230131133031 is an apocalyptic number.
30131133031 is a deficient number, since it is larger than the sum of its proper divisors (444413113).
30131133031 is an equidigital number, since it uses as much as digits as its factorization.
30131133031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 427881.
The product of its (nonzero) digits is 243, while the sum is 19.
Adding to 30131133031 its reverse (13033113103), we get a palindrome (43164246134).
The spelling of 30131133031 in words is "thirty billion, one hundred thirty-one million, one hundred thirty-three thousand, thirty-one".
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