861135103 has 2 divisors, whose sum is σ = 861135104. Its totient is φ = 861135102.

The previous prime is 861135059. The next prime is 861135133. The reversal of 861135103 is 301531168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861135103 - 2⁹ = 861134591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861135133) 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, 430567551 + 430567552.

It is an arithmetic number, because the mean of its divisors is an integer number (430567552).

Almost surely, 2^861135103 is an apocalyptic number.

861135103 is a deficient number, since it is larger than the sum of its proper divisors (1).

861135103 is an equidigital number, since it uses as much as digits as its factorization.

861135103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 861135103 is about 29345.1035609009. The cubic root of 861135103 is about 951.3867477693.

The spelling of 861135103 in words is "eight hundred sixty-one million, one hundred thirty-five thousand, one hundred three".