30681285331 has 4 divisors (see below), whose sum is σ = 30688702200. Its totient is φ = 30673868464.

The previous prime is 30681285317. The next prime is 30681285377. The reversal of 30681285331 is 13358218603.

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

It is a cyclic number.

It is not a de Polignac number, because 30681285331 - 2⁹ = 30681284819 is a prime.

It is a super-2 number, since 2×30681285331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30681285631) 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, 3702226 + ... + 3710503.

It is an arithmetic number, because the mean of its divisors is an integer number (7672175550).

Almost surely, 2^30681285331 is an apocalyptic number.

30681285331 is a deficient number, since it is larger than the sum of its proper divisors (7416869).

30681285331 is an equidigital number, since it uses as much as digits as its factorization.

30681285331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7416868.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 30681285331 in words is "thirty billion, six hundred eighty-one million, two hundred eighty-five thousand, three hundred thirty-one".