Base | Representation |
---|---|
bin | 11100000100100110… |
… | …101110110010000111 |
3 | 2212210122112221001202 |
4 | 130010212232302013 |
5 | 443212330024111 |
6 | 21502544213115 |
7 | 2114643024215 |
oct | 340446566207 |
9 | 85718487052 |
10 | 30142033031 |
11 | 11868434600 |
12 | 5a1260a19b |
13 | 2ac4934906 |
14 | 165d25bcb5 |
15 | bb6332b3b |
hex | 7049aec87 |
30142033031 has 12 divisors (see below), whose sum is σ = 33263356392. Its totient is φ = 27292650000.
The previous prime is 30142033003. The next prime is 30142033037. The reversal of 30142033031 is 13033024103.
It is not a de Polignac number, because 30142033031 - 214 = 30142016647 is a prime.
It is a super-2 number, since 2×301420330312 (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 = 30142032994 and 30142033012.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30142033037) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 465860 + ... + 526601.
It is an arithmetic number, because the mean of its divisors is an integer number (2771946366).
Almost surely, 230142033031 is an apocalyptic number.
30142033031 is a deficient number, since it is larger than the sum of its proper divisors (3121323361).
30142033031 is a wasteful number, since it uses less digits than its factorization.
30142033031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 992734 (or 992723 counting only the distinct ones).
The product of its (nonzero) digits is 648, while the sum is 20.
Adding to 30142033031 its reverse (13033024103), we get a palindrome (43175057134).
The spelling of 30142033031 in words is "thirty billion, one hundred forty-two million, thirty-three thousand, thirty-one".
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