30985311506 has 16 divisors (see below), whose sum is σ = 47121447384. Its totient is φ = 15278223744.

The previous prime is 30985311431. The next prime is 30985311529. The reversal of 30985311506 is 60511358903.

It can be written as a sum of positive squares in 4 ways, for example, as 29479173025 + 1506138481 = 171695^2 + 38809^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1539500 + ... + 1559496.

Almost surely, 2^30985311506 is an apocalyptic number.

30985311506 is a deficient number, since it is larger than the sum of its proper divisors (16136135878).

30985311506 is a wasteful number, since it uses less digits than its factorization.

30985311506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30685.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 30985311506 in words is "thirty billion, nine hundred eighty-five million, three hundred eleven thousand, five hundred six".