30940631805 has 32 divisors (see below), whose sum is σ = 53532347904. Its totient is φ = 15200531456.

The previous prime is 30940631791. The next prime is 30940631893. The reversal of 30940631805 is 50813604903.

It is a cyclic number.

It is not a de Polignac number, because 30940631805 - 2⁸ = 30940631549 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1278822 + ... + 1302791.

It is an arithmetic number, because the mean of its divisors is an integer number (1672885872).

Almost surely, 2^30940631805 is an apocalyptic number.

It is an amenable number.

30940631805 is a deficient number, since it is larger than the sum of its proper divisors (22591716099).

30940631805 is a wasteful number, since it uses less digits than its factorization.

30940631805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581685.

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 30940631805 in words is "thirty billion, nine hundred forty million, six hundred thirty-one thousand, eight hundred five".