Base | Representation |
---|---|
bin | 10010101111111101… |
… | …111101000110010111 |
3 | 1220222001010210222100 |
4 | 102233331331012113 |
5 | 312212310414111 |
6 | 13125405133143 |
7 | 1311615136146 |
oct | 225775750627 |
9 | 56861123870 |
10 | 20132123031 |
11 | 85a1071009 |
12 | 3a9a25a1b3 |
13 | 1b8ab87847 |
14 | d8da7975d |
15 | 7cc668756 |
hex | 4aff7d197 |
20132123031 has 96 divisors (see below), whose sum is σ = 32422965120. Its totient is φ = 11992780800.
The previous prime is 20132123023. The next prime is 20132123041. The reversal of 20132123031 is 13032123102.
It is not a de Polignac number, because 20132123031 - 23 = 20132123023 is a prime.
It is a super-2 number, since 2×201321230312 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 20132122995 and 20132123013.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20132123041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38641051 + ... + 38641571.
It is an arithmetic number, because the mean of its divisors is an integer number (337739220).
Almost surely, 220132123031 is an apocalyptic number.
20132123031 is a deficient number, since it is larger than the sum of its proper divisors (12290842089).
20132123031 is a wasteful number, since it uses less digits than its factorization.
20132123031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 777 (or 774 counting only the distinct ones).
The product of its (nonzero) digits is 216, while the sum is 18.
Adding to 20132123031 its reverse (13032123102), we get a palindrome (33164246133).
The spelling of 20132123031 in words is "twenty billion, one hundred thirty-two million, one hundred twenty-three thousand, thirty-one".
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