1385387123 has 2 divisors, whose sum is σ = 1385387124. Its totient is φ = 1385387122.

The previous prime is 1385387111. The next prime is 1385387153. The reversal of 1385387123 is 3217835831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1385387123 - 2⁸ = 1385386867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1385387153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692693561 + 692693562.

It is an arithmetic number, because the mean of its divisors is an integer number (692693562).

Almost surely, 2^1385387123 is an apocalyptic number.

1385387123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385387123 is an equidigital number, since it uses as much as digits as its factorization.

1385387123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 1385387123 is about 37220.7888551546. The cubic root of 1385387123 is about 1114.7831153291.

The spelling of 1385387123 in words is "one billion, three hundred eighty-five million, three hundred eighty-seven thousand, one hundred twenty-three".