Base | Representation |
---|---|
bin | 11100001111010101… |
… | …110010101101001111 |
3 | 2220021012110102011110 |
4 | 130033111302231033 |
5 | 444044432021111 |
6 | 21532500423103 |
7 | 2122260645306 |
oct | 341725625517 |
9 | 86235412143 |
10 | 30322142031 |
11 | 11950071115 |
12 | 5a629a7a93 |
13 | 2b2304629c |
14 | 167914343d |
15 | bc705d5a6 |
hex | 70f572b4f |
30322142031 has 4 divisors (see below), whose sum is σ = 40429522712. Its totient is φ = 20214761352.
The previous prime is 30322141991. The next prime is 30322142051. The reversal of 30322142031 is 13024122303.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13024122303 = 3 ⋅4341374101.
It is not a de Polignac number, because 30322142031 - 27 = 30322141903 is a prime.
It is a super-2 number, since 2×303221420312 (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 = 30322141989 and 30322142007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30322142051) 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, 5053690336 + ... + 5053690341.
It is an arithmetic number, because the mean of its divisors is an integer number (10107380678).
Almost surely, 230322142031 is an apocalyptic number.
30322142031 is a deficient number, since it is larger than the sum of its proper divisors (10107380681).
30322142031 is a wasteful number, since it uses less digits than its factorization.
30322142031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10107380680.
The product of its (nonzero) digits is 864, while the sum is 21.
Adding to 30322142031 its reverse (13024122303), we get a palindrome (43346264334).
The spelling of 30322142031 in words is "thirty billion, three hundred twenty-two million, one hundred forty-two thousand, thirty-one".
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