30616971309 has 12 divisors (see below), whose sum is σ = 44343083356. Its totient is φ = 20356589952.

The previous prime is 30616971293. The next prime is 30616971331. The reversal of 30616971309 is 90317961603.

It can be written as a sum of positive squares in 2 ways, for example, as 19686896100 + 10930075209 = 140310^2 + 104547^2 .

It is not a de Polignac number, because 30616971309 - 2⁴ = 30616971293 is a prime.

It is a super-2 number, since 2×30616971309² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30616971809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4556812 + ... + 4563525.

Almost surely, 2^30616971309 is an apocalyptic number.

It is an amenable number.

30616971309 is a deficient number, since it is larger than the sum of its proper divisors (13726112047).

30616971309 is a wasteful number, since it uses less digits than its factorization.

30616971309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9120716 (or 9120713 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The spelling of 30616971309 in words is "thirty billion, six hundred sixteen million, nine hundred seventy-one thousand, three hundred nine".