30921840522 has 12 divisors (see below), whose sum is σ = 66997321170. Its totient is φ = 10307280168.

The previous prime is 30921840487. The next prime is 30921840533. The reversal of 30921840522 is 22504812903.

It is a happy number.

30921840522 is a `hidden beast` number, since 3 + 0 + 92 + 1 + 8 + 40 + 522 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18073844721 + 12847995801 = 134439^2 + 113349^2 .

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 5 ways as a sum of consecutive naturals, for example, 858939997 + ... + 858940032.

Almost surely, 2^30921840522 is an apocalyptic number.

30921840522 is an abundant number, since it is smaller than the sum of its proper divisors (36075480648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30921840522 is a wasteful number, since it uses less digits than its factorization.

30921840522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717880037 (or 1717880034 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 30921840522 in words is "thirty billion, nine hundred twenty-one million, eight hundred forty thousand, five hundred twenty-two".