30420531533 has 16 divisors (see below), whose sum is σ = 36629483520. Its totient is φ = 24679871856.

The previous prime is 30420531523. The next prime is 30420531551. The reversal of 30420531533 is 33513502403.

It is not a de Polignac number, because 30420531533 - 2⁴ = 30420531517 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30420531496 and 30420531505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420531523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43016 + ... + 250382.

It is an arithmetic number, because the mean of its divisors is an integer number (2289342720).

Almost surely, 2^30420531533 is an apocalyptic number.

It is an amenable number.

30420531533 is a deficient number, since it is larger than the sum of its proper divisors (6208951987).

30420531533 is a wasteful number, since it uses less digits than its factorization.

30420531533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208496.

The product of its (nonzero) digits is 16200, while the sum is 29.

The spelling of 30420531533 in words is "thirty billion, four hundred twenty million, five hundred thirty-one thousand, five hundred thirty-three".