30319018561 has 12 divisors (see below), whose sum is σ = 34460189652. Its totient is φ = 26513793504.

The previous prime is 30319018553. The next prime is 30319018573. The reversal of 30319018561 is 16581091303.

It can be written as a sum of positive squares in 2 ways, for example, as 2585112336 + 27733906225 = 50844^2 + 166535^2 .

It is not a de Polignac number, because 30319018561 - 2³ = 30319018553 is a prime.

It is a super-3 number, since 3×30319018561³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30319018561.

It is not an unprimeable number, because it can be changed into a prime (30319018511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3225546 + ... + 3234931.

It is an arithmetic number, because the mean of its divisors is an integer number (2871682471).

Almost surely, 2^30319018561 is an apocalyptic number.

It is an amenable number.

30319018561 is a deficient number, since it is larger than the sum of its proper divisors (4141171091).

30319018561 is a wasteful number, since it uses less digits than its factorization.

30319018561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6460528 (or 6460509 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The spelling of 30319018561 in words is "thirty billion, three hundred nineteen million, eighteen thousand, five hundred sixty-one".