30311130013221 has 32 divisors (see below), whose sum is σ = 42201999423360. Its totient is φ = 19333279846400.

The previous prime is 30311130013207. The next prime is 30311130013253. The reversal of 30311130013221 is 12231003111303.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30311130013221 - 2²⁵ = 30311096458789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311130013261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12448870 + ... + 14683208.

It is an arithmetic number, because the mean of its divisors is an integer number (1318812481980).

Almost surely, 2^{30311130013221} is an apocalyptic number.

It is an amenable number.

30311130013221 is a deficient number, since it is larger than the sum of its proper divisors (11890869410139).

30311130013221 is a wasteful number, since it uses less digits than its factorization.

30311130013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236517.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 30311130013221 its reverse (12231003111303), we get a palindrome (42542133124524).

The spelling of 30311130013221 in words is "thirty trillion, three hundred eleven billion, one hundred thirty million, thirteen thousand, two hundred twenty-one".