Base | Representation |
---|---|
bin | 10110010110101001… |
… | …11110111010101111 |
3 | 1010222101101122012102 |
4 | 23023110332322233 |
5 | 144034302210111 |
6 | 5302511325315 |
7 | 603254413346 |
oct | 131324767257 |
9 | 33871348172 |
10 | 12001210031 |
11 | 50a94087a8 |
12 | 23ab22083b |
13 | 1193499515 |
14 | 81bc54b5d |
15 | 4a390e13b |
hex | 2cb53eeaf |
12001210031 has 2 divisors, whose sum is σ = 12001210032. Its totient is φ = 12001210030.
The previous prime is 12001210019. The next prime is 12001210033. The reversal of 12001210031 is 13001210021.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 12001210031 - 214 = 12001193647 is a prime.
It is a super-2 number, since 2×120012100312 (a number of 21 digits) contains 22 as substring.
Together with 12001210033, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 12001209994 and 12001210021.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12001210033) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000605015 + 6000605016.
It is an arithmetic number, because the mean of its divisors is an integer number (6000605016).
Almost surely, 212001210031 is an apocalyptic number.
12001210031 is a deficient number, since it is larger than the sum of its proper divisors (1).
12001210031 is an equidigital number, since it uses as much as digits as its factorization.
12001210031 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 12, while the sum is 11.
Adding to 12001210031 its reverse (13001210021), we get a palindrome (25002420052).
The spelling of 12001210031 in words is "twelve billion, one million, two hundred ten thousand, thirty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •