123101087 has 2 divisors, whose sum is σ = 123101088. Its totient is φ = 123101086.

The previous prime is 123101059. The next prime is 123101119. The reversal of 123101087 is 780101321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123101087 - 2¹⁰ = 123100063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123101047) 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, 61550543 + 61550544.

It is an arithmetic number, because the mean of its divisors is an integer number (61550544).

Almost surely, 2^123101087 is an apocalyptic number.

123101087 is a deficient number, since it is larger than the sum of its proper divisors (1).

123101087 is an equidigital number, since it uses as much as digits as its factorization.

123101087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 123101087 is about 11095.0929243517. The cubic root of 123101087 is about 497.4551858154.

The spelling of 123101087 in words is "one hundred twenty-three million, one hundred one thousand, eighty-seven".