Base | Representation |
---|---|
bin | 111001010100… |
… | …0011011101111 |
3 | 2002112200220010 |
4 | 1302220123233 |
5 | 30143100111 |
6 | 2552024303 |
7 | 513264264 |
oct | 162503357 |
9 | 62480803 |
10 | 30050031 |
11 | 15a65040 |
12 | a092093 |
13 | 62c19ab |
14 | 3dc326b |
15 | 2988aa6 |
hex | 1ca86ef |
30050031 has 16 divisors (see below), whose sum is σ = 44892288. Its totient is φ = 17719200.
The previous prime is 30049979. The next prime is 30050047. The reversal of 30050031 is 13005003.
It is a happy number.
It is not a de Polignac number, because 30050031 - 210 = 30049007 is a prime.
It is a super-2 number, since 2×300500312 = 1806008726201922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 30049989 and 30050016.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30050051) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11085 + ... + 13526.
It is an arithmetic number, because the mean of its divisors is an integer number (2805768).
Almost surely, 230050031 is an apocalyptic number.
30050031 is a deficient number, since it is larger than the sum of its proper divisors (14842257).
30050031 is a wasteful number, since it uses less digits than its factorization.
30050031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24662.
The product of its (nonzero) digits is 45, while the sum is 12.
The square root of 30050031 is about 5481.7908570101. The cubic root of 30050031 is about 310.8958857181.
Adding to 30050031 its reverse (13005003), we get a palindrome (43055034).
The spelling of 30050031 in words is "thirty million, fifty thousand, thirty-one".
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