30020130031 has 4 divisors (see below), whose sum is σ = 30026879064. Its totient is φ = 30013381000.

The previous prime is 30020130011. The next prime is 30020130053. The reversal of 30020130031 is 13003102003.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30020130031 is a prime.

It is a super-2 number, since 2×30020130031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30020129993 and 30020130020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020130011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3367840 + ... + 3376741.

It is an arithmetic number, because the mean of its divisors is an integer number (7506719766).

Almost surely, 2^30020130031 is an apocalyptic number.

30020130031 is a deficient number, since it is larger than the sum of its proper divisors (6749033).

30020130031 is an equidigital number, since it uses as much as digits as its factorization.

30020130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749032.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 30020130031 its reverse (13003102003), we get a palindrome (43023232034).

The spelling of 30020130031 in words is "thirty billion, twenty million, one hundred thirty thousand, thirty-one".