30868129 has 2 divisors, whose sum is σ = 30868130. Its totient is φ = 30868128.

The previous prime is 30868111. The next prime is 30868133. The reversal of 30868129 is 92186803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30747025 + 121104 = 5545^2 + 348^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30868129 is a prime.

It is equal to p_1908379 and since 30868129 and 1908379 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (30868169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434064 + 15434065.

It is an arithmetic number, because the mean of its divisors is an integer number (15434065).

Almost surely, 2^30868129 is an apocalyptic number.

It is an amenable number.

30868129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30868129 is an equidigital number, since it uses as much as digits as its factorization.

30868129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 30868129 is about 5555.9093765107. The cubic root of 30868129 is about 313.6919944830.

The spelling of 30868129 in words is "thirty million, eight hundred sixty-eight thousand, one hundred twenty-nine".