Base | Representation |
---|---|
bin | 1100010101110101100… |
… | …0111111101101110111 |
3 | 202021021001110200121022 |
4 | 3011131120333231313 |
5 | 11433204134343111 |
6 | 241222321211355 |
7 | 21214026141230 |
oct | 3053530775567 |
9 | 667231420538 |
10 | 212020231031 |
11 | 81a0a990734 |
12 | 35111190b5b |
13 | 16cbb71830b |
14 | a394688087 |
15 | 57ad88e2db |
hex | 315d63fb77 |
212020231031 has 8 divisors (see below), whose sum is σ = 242686857504. Its totient is φ = 181448110080.
The previous prime is 212020231019. The next prime is 212020231037. The reversal of 212020231031 is 130132020212.
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 212020231031 - 210 = 212020230007 is a prime.
It is a super-2 number, since 2×2120202310312 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212020231037) 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, 23621570 + ... + 23630543.
It is an arithmetic number, because the mean of its divisors is an integer number (30335857188).
Almost surely, 2212020231031 is an apocalyptic number.
212020231031 is a deficient number, since it is larger than the sum of its proper divisors (30666626473).
212020231031 is an equidigital number, since it uses as much as digits as its factorization.
212020231031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 47252761.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 212020231031 its reverse (130132020212), we get a palindrome (342152251243).
The spelling of 212020231031 in words is "two hundred twelve billion, twenty million, two hundred thirty-one thousand, thirty-one".
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