Base | Representation |
---|---|
bin | 10011101111100… |
… | …011011101101011 |
3 | 212002021101102202 |
4 | 103233203131223 |
5 | 1134243430011 |
6 | 52511250415 |
7 | 11131302155 |
oct | 2357433553 |
9 | 762241382 |
10 | 331233131 |
11 | 15aa77399 |
12 | 92b19a0b |
13 | 53815148 |
14 | 31dc3ad5 |
15 | 1e12d23b |
hex | 13be376b |
331233131 has 2 divisors, whose sum is σ = 331233132. Its totient is φ = 331233130.
The previous prime is 331233127. The next prime is 331233167. The reversal of 331233131 is 131332133.
It is a weak prime.
It is an emirp because it is prime and its reverse (131332133) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 331233131 - 22 = 331233127 is a prime.
It is a super-2 number, since 2×3312331312 = 219430774144126322, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (331233101) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165616565 + 165616566.
It is an arithmetic number, because the mean of its divisors is an integer number (165616566).
Almost surely, 2331233131 is an apocalyptic number.
331233131 is a deficient number, since it is larger than the sum of its proper divisors (1).
331233131 is an equidigital number, since it uses as much as digits as its factorization.
331233131 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 486, while the sum is 20.
The square root of 331233131 is about 18199.8112902305. The cubic root of 331233131 is about 691.9020063216.
Adding to 331233131 its reverse (131332133), we get a palindrome (462565264).
The spelling of 331233131 in words is "three hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty-one".
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