Base | Representation |
---|---|
bin | 10110101111110100… |
… | …01111000011001111 |
3 | 1011112002121012222122 |
4 | 23113322033003033 |
5 | 200002322131111 |
6 | 5335452003155 |
7 | 611426566046 |
oct | 132772170317 |
9 | 34462535878 |
10 | 12212302031 |
11 | 51a75872a6 |
12 | 2449a604bb |
13 | 11c8138427 |
14 | 83bcc355d |
15 | 4b7209cdb |
hex | 2d7e8f0cf |
12212302031 has 8 divisors (see below), whose sum is σ = 12230000640. Its totient is φ = 12194619192.
The previous prime is 12212302021. The next prime is 12212302033. The reversal of 12212302031 is 13020321221.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12212302031 is a prime.
It is a super-2 number, since 2×122123020312 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12212302033) 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, 2630210 + ... + 2634848.
It is an arithmetic number, because the mean of its divisors is an integer number (1528750080).
Almost surely, 212212302031 is an apocalyptic number.
12212302031 is a deficient number, since it is larger than the sum of its proper divisors (17698609).
12212302031 is a wasteful number, since it uses less digits than its factorization.
12212302031 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7885.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 12212302031 its reverse (13020321221), we get a palindrome (25232623252).
The spelling of 12212302031 in words is "twelve billion, two hundred twelve million, three hundred two thousand, thirty-one".
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