Base | Representation |
---|---|
bin | 111011001011… |
… | …0111101001111 |
3 | 2011101100002000 |
4 | 1312112331033 |
5 | 30420331043 |
6 | 3025003343 |
7 | 524503536 |
oct | 166267517 |
9 | 64340060 |
10 | 31027023 |
11 | 16572075 |
12 | a483553 |
13 | 65745b1 |
14 | 419931d |
15 | 2acd2d3 |
hex | 1d96f4f |
31027023 has 32 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 18615168.
The previous prime is 31026997. The next prime is 31027033. The reversal of 31027023 is 32072013.
It is not a de Polignac number, because 31027023 - 28 = 31026767 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 31026987 and 31027005.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31027033) 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 31 ways as a sum of consecutive naturals, for example, 9088 + ... + 12026.
It is an arithmetic number, because the mean of its divisors is an integer number (1587600).
Almost surely, 231027023 is an apocalyptic number.
31027023 is a deficient number, since it is larger than the sum of its proper divisors (19776177).
31027023 is a wasteful number, since it uses less digits than its factorization.
31027023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2988 (or 2982 counting only the distinct ones).
The product of its (nonzero) digits is 252, while the sum is 18.
The square root of 31027023 is about 5570.1905712462. The cubic root of 31027023 is about 314.2293177929.
Adding to 31027023 its reverse (32072013), we get a palindrome (63099036).
The spelling of 31027023 in words is "thirty-one million, twenty-seven thousand, twenty-three".
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