30131134221 has 16 divisors (see below), whose sum is σ = 40244904000. Its totient is φ = 20052428928.

The previous prime is 30131134217. The next prime is 30131134343. The reversal of 30131134221 is 12243113103.

It is not a de Polignac number, because 30131134221 - 2² = 30131134217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131134921) 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 15 ways as a sum of consecutive naturals, for example, 4780330 + ... + 4786628.

It is an arithmetic number, because the mean of its divisors is an integer number (2515306500).

Almost surely, 2^30131134221 is an apocalyptic number.

It is an amenable number.

30131134221 is a deficient number, since it is larger than the sum of its proper divisors (10113769779).

30131134221 is a wasteful number, since it uses less digits than its factorization.

30131134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 30131134221 its reverse (12243113103), we get a palindrome (42374247324).

The spelling of 30131134221 in words is "thirty billion, one hundred thirty-one million, one hundred thirty-four thousand, two hundred twenty-one".