123012315335389 has 2 divisors, whose sum is σ = 123012315335390. Its totient is φ = 123012315335388.

The previous prime is 123012315335269. The next prime is 123012315335417. The reversal of 123012315335389 is 983533513210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68950603322500 + 54061712012889 = 8303650^2 + 7352667^2 .

It is a cyclic number.

It is not a de Polignac number, because 123012315335389 - 2²¹ = 123012313238237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123012315333389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506157667694 + 61506157667695.

It is an arithmetic number, because the mean of its divisors is an integer number (61506157667695).

Almost surely, 2^{123012315335389} is an apocalyptic number.

It is an amenable number.

123012315335389 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012315335389 is an equidigital number, since it uses as much as digits as its factorization.

123012315335389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 123012315335389 in words is "one hundred twenty-three trillion, twelve billion, three hundred fifteen million, three hundred thirty-five thousand, three hundred eighty-nine".