30020011231 has 4 divisors (see below), whose sum is σ = 34308584272. Its totient is φ = 25731438192.

The previous prime is 30020011213. The next prime is 30020011247. The reversal of 30020011231 is 13211002003.

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 30020011231 - 2²³ = 30011622623 is a prime.

It is a super-2 number, since 2×30020011231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020011201) 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, 2144286510 + ... + 2144286523.

It is an arithmetic number, because the mean of its divisors is an integer number (8577146068).

Almost surely, 2^30020011231 is an apocalyptic number.

30020011231 is a deficient number, since it is larger than the sum of its proper divisors (4288573041).

30020011231 is an equidigital number, since it uses as much as digits as its factorization.

30020011231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288573040.

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

Adding to 30020011231 its reverse (13211002003), we get a palindrome (43231013234).

The spelling of 30020011231 in words is "thirty billion, twenty million, eleven thousand, two hundred thirty-one".