Base | Representation |
---|---|
bin | 11011111110000011… |
… | …000010011011100111 |
3 | 2212111222112022222221 |
4 | 123332003002123213 |
5 | 443001143404111 |
6 | 21444014133211 |
7 | 2112135620206 |
oct | 337603023347 |
9 | 85458468887 |
10 | 30032013031 |
11 | 11811319989 |
12 | 59a17b1207 |
13 | 2aa7bc3417 |
14 | 164c7bd23d |
15 | bab84e371 |
hex | 6fe0c26e7 |
30032013031 has 4 divisors (see below), whose sum is σ = 31337752752. Its totient is φ = 28726273312.
The previous prime is 30032013013. The next prime is 30032013049. The reversal of 30032013031 is 13031023003.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (30032013013) and next prime (30032013049).
It is a cyclic number.
It is not a de Polignac number, because 30032013031 - 213 = 30032004839 is a prime.
It is a super-2 number, since 2×300320130312 (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 = 30032012996 and 30032013014.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30032013071) 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, 652869826 + ... + 652869871.
It is an arithmetic number, because the mean of its divisors is an integer number (7834438188).
Almost surely, 230032013031 is an apocalyptic number.
30032013031 is a deficient number, since it is larger than the sum of its proper divisors (1305739721).
30032013031 is a wasteful number, since it uses less digits than its factorization.
30032013031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1305739720.
The product of its (nonzero) digits is 162, while the sum is 16.
Adding to 30032013031 its reverse (13031023003), we get a palindrome (43063036034).
The spelling of 30032013031 in words is "thirty billion, thirty-two million, thirteen thousand, thirty-one".
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