30655129 has 4 divisors (see below), whose sum is σ = 31483684. Its totient is φ = 29826576.

The previous prime is 30655127. The next prime is 30655171. The reversal of 30655129 is 92155603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17347225 + 13307904 = 4165^2 + 3648^2 .

It is a cyclic number.

It is not a de Polignac number, because 30655129 - 2¹ = 30655127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30655129.

It is not an unprimeable number, because it can be changed into a prime (30655127) 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 in 3 ways as a sum of consecutive naturals, for example, 414222 + ... + 414295.

It is an arithmetic number, because the mean of its divisors is an integer number (7870921).

Almost surely, 2^30655129 is an apocalyptic number.

It is an amenable number.

30655129 is a deficient number, since it is larger than the sum of its proper divisors (828555).

30655129 is an equidigital number, since it uses as much as digits as its factorization.

30655129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828554.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 30655129 is about 5536.7074150618. The cubic root of 30655129 is about 312.9688033499.

The spelling of 30655129 in words is "thirty million, six hundred fifty-five thousand, one hundred twenty-nine".