30308136917 has 4 divisors (see below), whose sum is σ = 30308924076. Its totient is φ = 30307349760.

The previous prime is 30308136853. The next prime is 30308136931. The reversal of 30308136917 is 71963180303.

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 27907038916 + 2401098001 = 167054^2 + 49001^2 .

It is a cyclic number.

It is not a de Polignac number, because 30308136917 - 2⁶ = 30308136853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30308186917) 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 in 3 ways as a sum of consecutive naturals, for example, 332684 + ... + 413877.

It is an arithmetic number, because the mean of its divisors is an integer number (7577231019).

Almost surely, 2^30308136917 is an apocalyptic number.

It is an amenable number.

30308136917 is a deficient number, since it is larger than the sum of its proper divisors (787159).

30308136917 is an equidigital number, since it uses as much as digits as its factorization.

30308136917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787158.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 30308136917 in words is "thirty billion, three hundred eight million, one hundred thirty-six thousand, nine hundred seventeen".