Base | Representation |
---|---|
bin | 10111000100000010… |
… | …11101111111110111 |
3 | 1011221220212021021011 |
4 | 23202001131333313 |
5 | 200324241023143 |
6 | 5404352333051 |
7 | 615560004064 |
oct | 134201357767 |
9 | 34856767234 |
10 | 12381970423 |
11 | 5284332709 |
12 | 2496844187 |
13 | 1224332824 |
14 | 85664bc6b |
15 | 4c7071e9d |
hex | 2e205dff7 |
12381970423 has 2 divisors, whose sum is σ = 12381970424. Its totient is φ = 12381970422.
The previous prime is 12381970421. The next prime is 12381970441. The reversal of 12381970423 is 32407918321.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 12381970423 - 21 = 12381970421 is a prime.
Together with 12381970421, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12381970421) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6190985211 + 6190985212.
It is an arithmetic number, because the mean of its divisors is an integer number (6190985212).
Almost surely, 212381970423 is an apocalyptic number.
12381970423 is a deficient number, since it is larger than the sum of its proper divisors (1).
12381970423 is an equidigital number, since it uses as much as digits as its factorization.
12381970423 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 72576, while the sum is 40.
The spelling of 12381970423 in words is "twelve billion, three hundred eighty-one million, nine hundred seventy thousand, four hundred twenty-three".
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