30311129 has 2 divisors, whose sum is σ = 30311130. Its totient is φ = 30311128.

The previous prime is 30311093. The next prime is 30311147. The reversal of 30311129 is 92111303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29997529 + 313600 = 5477^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 30311129 - 2⁸ = 30310873 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30311129.

It is not a weakly prime, because it can be changed into another prime (30311159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15155564 + 15155565.

It is an arithmetic number, because the mean of its divisors is an integer number (15155565).

Almost surely, 2^30311129 is an apocalyptic number.

It is an amenable number.

30311129 is a deficient number, since it is larger than the sum of its proper divisors (1).

30311129 is an equidigital number, since it uses as much as digits as its factorization.

30311129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 30311129 is about 5505.5543771722. The cubic root of 30311129 is about 311.7937252858.

The spelling of 30311129 in words is "thirty million, three hundred eleven thousand, one hundred twenty-nine".