1230105187 has 2 divisors, whose sum is σ = 1230105188. Its totient is φ = 1230105186.

The previous prime is 1230105181. The next prime is 1230105259. The reversal of 1230105187 is 7815010321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1230105187 - 2¹⁵ = 1230072419 is a prime.

It is a super-3 number, since 3×1230105187³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1230105181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615052593 + 615052594.

It is an arithmetic number, because the mean of its divisors is an integer number (615052594).

Almost surely, 2^1230105187 is an apocalyptic number.

1230105187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230105187 is an equidigital number, since it uses as much as digits as its factorization.

1230105187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1230105187 is about 35072.8554155489. The cubic root of 1230105187 is about 1071.4718112844.

The spelling of 1230105187 in words is "one billion, two hundred thirty million, one hundred five thousand, one hundred eighty-seven".