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4123031389 is a prime number
BaseRepresentation
bin1111010111000000…
…0111011101011101
3101122100012200210021
43311300013131131
531420444001024
61521042512141
7204113121451
oct36560073535
911570180707
104123031389
111826386564
12970965651
1350926a359
142b181c661
15191e78de4
hexf5c0775d

4123031389 has 2 divisors, whose sum is σ = 4123031390. Its totient is φ = 4123031388.

The previous prime is 4123031377. The next prime is 4123031417. The reversal of 4123031389 is 9831303214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2104056900 + 2018974489 = 45870^2 + 44933^2 .

It is a cyclic number.

It is not a de Polignac number, because 4123031389 - 27 = 4123031261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4123031329) 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, 2061515694 + 2061515695.

It is an arithmetic number, because the mean of its divisors is an integer number (2061515695).

Almost surely, 24123031389 is an apocalyptic number.

It is an amenable number.

4123031389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4123031389 is an equidigital number, since it uses as much as digits as its factorization.

4123031389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 4123031389 is about 64210.8354485440. The cubic root of 4123031389 is about 1603.5119976394.

The spelling of 4123031389 in words is "four billion, one hundred twenty-three million, thirty-one thousand, three hundred eighty-nine".