30420031211 has 4 divisors (see below), whose sum is σ = 30469656672. Its totient is φ = 30370405752.

The previous prime is 30420031181. The next prime is 30420031223. The reversal of 30420031211 is 11213002403.

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 30420031211 - 2¹⁴ = 30420014827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30420031211.

It is not an unprimeable number, because it can be changed into a prime (30420331211) 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, 24811811 + ... + 24813036.

It is an arithmetic number, because the mean of its divisors is an integer number (7617414168).

Almost surely, 2^30420031211 is an apocalyptic number.

30420031211 is a deficient number, since it is larger than the sum of its proper divisors (49625461).

30420031211 is an equidigital number, since it uses as much as digits as its factorization.

30420031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49625460.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 30420031211 its reverse (11213002403), we get a palindrome (41633033614).

The spelling of 30420031211 in words is "thirty billion, four hundred twenty million, thirty-one thousand, two hundred eleven".