30331311321 has 32 divisors (see below), whose sum is σ = 42062082048. Its totient is φ = 19428111360.

The previous prime is 30331311317. The next prime is 30331311331. The reversal of 30331311321 is 12311313303.

It is not a de Polignac number, because 30331311321 - 2² = 30331311317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30331311331) 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 31 ways as a sum of consecutive naturals, for example, 2132991 + ... + 2147163.

It is an arithmetic number, because the mean of its divisors is an integer number (1314440064).

Almost surely, 2^30331311321 is an apocalyptic number.

It is an amenable number.

30331311321 is a deficient number, since it is larger than the sum of its proper divisors (11730770727).

30331311321 is a wasteful number, since it uses less digits than its factorization.

30331311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14481.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 30331311321 its reverse (12311313303), we get a palindrome (42642624624).

The spelling of 30331311321 in words is "thirty billion, three hundred thirty-one million, three hundred eleven thousand, three hundred twenty-one".