30520042131 has 8 divisors (see below), whose sum is σ = 40753500624. Its totient is φ = 20316639200.

The previous prime is 30520042127. The next prime is 30520042141. The reversal of 30520042131 is 13124002503.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30520042131 - 2² = 30520042127 is a prime.

It is a super-2 number, since 2×30520042131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30520042098 and 30520042107.

It is not an unprimeable number, because it can be changed into a prime (30520042141) 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 7 ways as a sum of consecutive naturals, for example, 7511520 + ... + 7515581.

It is an arithmetic number, because the mean of its divisors is an integer number (5094187578).

Almost surely, 2^30520042131 is an apocalyptic number.

30520042131 is a deficient number, since it is larger than the sum of its proper divisors (10233458493).

30520042131 is a wasteful number, since it uses less digits than its factorization.

30520042131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15027781.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30520042131 its reverse (13124002503), we get a palindrome (43644044634).

The spelling of 30520042131 in words is "thirty billion, five hundred twenty million, forty-two thousand, one hundred thirty-one".