Base | Representation |
---|---|
bin | 100110001110… |
… | …010010111111 |
3 | 200212001220021 |
4 | 212032102333 |
5 | 10031120111 |
6 | 554433011 |
7 | 151111630 |
oct | 46162277 |
9 | 20761807 |
10 | 10020031 |
11 | 572421a |
12 | 3432767 |
13 | 20caa18 |
14 | 148b887 |
15 | d2dd71 |
hex | 98e4bf |
10020031 has 8 divisors (see below), whose sum is σ = 11731104. Its totient is φ = 8378880.
The previous prime is 10020013. The next prime is 10020041. The reversal of 10020031 is 13002001.
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 10020031 - 29 = 10019519 is a prime.
It is a super-2 number, since 2×100200312 = 200802042481922, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (7).
It is a junction number, because it is equal to n+sod(n) for n = 10019996 and 10020023.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10020041) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17170 + ... + 17743.
It is an arithmetic number, because the mean of its divisors is an integer number (1466388).
Almost surely, 210020031 is an apocalyptic number.
10020031 is a deficient number, since it is larger than the sum of its proper divisors (1711073).
10020031 is an equidigital number, since it uses as much as digits as its factorization.
10020031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 34961.
The product of its (nonzero) digits is 6, while the sum is 7.
The square root of 10020031 is about 3165.4432549013. The cubic root of 10020031 is about 215.5872246645.
Adding to 10020031 its reverse (13002001), we get a palindrome (23022032).
The spelling of 10020031 in words is "ten million, twenty thousand, thirty-one".
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