30311030321 has 24 divisors (see below), whose sum is σ = 35843199840. Its totient is φ = 25409280000.

The previous prime is 30311030317. The next prime is 30311030339. The reversal of 30311030321 is 12303011303.

It is not a de Polignac number, because 30311030321 - 2² = 30311030317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30311030321.

It is not an unprimeable number, because it can be changed into a prime (30311032321) 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 23 ways as a sum of consecutive naturals, for example, 1886321 + ... + 1902321.

It is an arithmetic number, because the mean of its divisors is an integer number (1493466660).

Almost surely, 2^30311030321 is an apocalyptic number.

It is an amenable number.

30311030321 is a deficient number, since it is larger than the sum of its proper divisors (5532169519).

30311030321 is a wasteful number, since it uses less digits than its factorization.

30311030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17057 (or 17044 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30311030321 its reverse (12303011303), we get a palindrome (42614041624).

The spelling of 30311030321 in words is "thirty billion, three hundred eleven million, thirty thousand, three hundred twenty-one".