30000122131 has 4 divisors (see below), whose sum is σ = 34285853872. Its totient is φ = 25714390392.

The previous prime is 30000122123. The next prime is 30000122147. The reversal of 30000122131 is 13122100003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30000122131 - 2³ = 30000122123 is a prime.

It is a super-2 number, since 2×30000122131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30006122131) 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 3 ways as a sum of consecutive naturals, for example, 2142865860 + ... + 2142865873.

It is an arithmetic number, because the mean of its divisors is an integer number (8571463468).

Almost surely, 2^30000122131 is an apocalyptic number.

30000122131 is a deficient number, since it is larger than the sum of its proper divisors (4285731741).

30000122131 is an equidigital number, since it uses as much as digits as its factorization.

30000122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285731740.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30000122131 its reverse (13122100003), we get a palindrome (43122222134).

The spelling of 30000122131 in words is "thirty billion, one hundred twenty-two thousand, one hundred thirty-one".