123100950187 has 2 divisors, whose sum is σ = 123100950188. Its totient is φ = 123100950186.

The previous prime is 123100950169. The next prime is 123100950199. The reversal of 123100950187 is 781059001321.

It is a strong prime.

It is an emirp because it is prime and its reverse (781059001321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123100950187 is a prime.

It is not a weakly prime, because it can be changed into another prime (123100950157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61550475093 + 61550475094.

It is an arithmetic number, because the mean of its divisors is an integer number (61550475094).

Almost surely, 2^123100950187 is an apocalyptic number.

123100950187 is a deficient number, since it is larger than the sum of its proper divisors (1).

123100950187 is an equidigital number, since it uses as much as digits as its factorization.

123100950187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 123100950187 in words is "one hundred twenty-three billion, one hundred million, nine hundred fifty thousand, one hundred eighty-seven".