30131111321 has 16 divisors (see below), whose sum is σ = 32016176640. Its totient is φ = 28258748160.

The previous prime is 30131111299. The next prime is 30131111443. The reversal of 30131111321 is 12311113103.

It is a cyclic number.

It is not a de Polignac number, because 30131111321 - 2¹⁰ = 30131110297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 30131111321.

It is not an unprimeable number, because it can be changed into a prime (30131111821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6683150 + ... + 6687656.

It is an arithmetic number, because the mean of its divisors is an integer number (2001011040).

Almost surely, 2^30131111321 is an apocalyptic number.

It is an amenable number.

30131111321 is a deficient number, since it is larger than the sum of its proper divisors (1885065319).

30131111321 is a wasteful number, since it uses less digits than its factorization.

30131111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 30131111321 its reverse (12311113103), we get a palindrome (42442224424).

The spelling of 30131111321 in words is "thirty billion, one hundred thirty-one million, one hundred eleven thousand, three hundred twenty-one".