123201030187 has 2 divisors, whose sum is σ = 123201030188. Its totient is φ = 123201030186.

The previous prime is 123201030181. The next prime is 123201030263. The reversal of 123201030187 is 781030102321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123201030187 - 2³¹ = 121053546539 is a prime.

It is not a weakly prime, because it can be changed into another prime (123201030181) 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, 61600515093 + 61600515094.

It is an arithmetic number, because the mean of its divisors is an integer number (61600515094).

Almost surely, 2^123201030187 is an apocalyptic number.

123201030187 is a deficient number, since it is larger than the sum of its proper divisors (1).

123201030187 is an equidigital number, since it uses as much as digits as its factorization.

123201030187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 123201030187 in words is "one hundred twenty-three billion, two hundred one million, thirty thousand, one hundred eighty-seven".