30231012211 has 4 divisors (see below), whose sum is σ = 30238065000. Its totient is φ = 30223959424.

The previous prime is 30231012199. The next prime is 30231012289. The reversal of 30231012211 is 11221013203.

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-30231012211 is a prime.

It is a super-2 number, since 2×30231012211² (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 (30231012811) 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, 3519961 + ... + 3528538.

It is an arithmetic number, because the mean of its divisors is an integer number (7559516250).

Almost surely, 2^30231012211 is an apocalyptic number.

30231012211 is a deficient number, since it is larger than the sum of its proper divisors (7052789).

30231012211 is an equidigital number, since it uses as much as digits as its factorization.

30231012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052788.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30231012211 its reverse (11221013203), we get a palindrome (41452025414).

The spelling of 30231012211 in words is "thirty billion, two hundred thirty-one million, twelve thousand, two hundred eleven".