123012397 has 2 divisors, whose sum is σ = 123012398. Its totient is φ = 123012396.

The previous prime is 123012389. The next prime is 123012419. The reversal of 123012397 is 793210321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123010281 + 2116 = 11091^2 + 46^2 .

It is a cyclic number.

It is not a de Polignac number, because 123012397 - 2³ = 123012389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123012317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506198 + 61506199.

It is an arithmetic number, because the mean of its divisors is an integer number (61506199).

Almost surely, 2^123012397 is an apocalyptic number.

It is an amenable number.

123012397 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012397 is an equidigital number, since it uses as much as digits as its factorization.

123012397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 123012397 is about 11091.0953922505. The cubic root of 123012397 is about 497.3356907966.

The spelling of 123012397 in words is "one hundred twenty-three million, twelve thousand, three hundred ninety-seven".