30866523109 has 2 divisors, whose sum is σ = 30866523110. Its totient is φ = 30866523108.

The previous prime is 30866523067. The next prime is 30866523113. The reversal of 30866523109 is 90132566803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23385138084 + 7481385025 = 152922^2 + 86495^2 .

It is a cyclic number.

It is not a de Polignac number, because 30866523109 - 2⁹ = 30866522597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30866523509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15433261554 + 15433261555.

It is an arithmetic number, because the mean of its divisors is an integer number (15433261555).

Almost surely, 2^30866523109 is an apocalyptic number.

It is an amenable number.

30866523109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30866523109 is an equidigital number, since it uses as much as digits as its factorization.

30866523109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 30866523109 in words is "thirty billion, eight hundred sixty-six million, five hundred twenty-three thousand, one hundred nine".