30131023211 has 4 divisors (see below), whose sum is σ = 30135261624. Its totient is φ = 30126784800.

The previous prime is 30131023103. The next prime is 30131023259. The reversal of 30131023211 is 11232013103.

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 30131023211 - 2²⁶ = 30063914347 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 30131023211.

It is not an unprimeable number, because it can be changed into a prime (30131023271) 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, 2108525 + ... + 2122766.

It is an arithmetic number, because the mean of its divisors is an integer number (7533815406).

Almost surely, 2^30131023211 is an apocalyptic number.

30131023211 is a deficient number, since it is larger than the sum of its proper divisors (4238413).

30131023211 is an equidigital number, since it uses as much as digits as its factorization.

30131023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238412.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30131023211 its reverse (11232013103), we get a palindrome (41363036314).

The spelling of 30131023211 in words is "thirty billion, one hundred thirty-one million, twenty-three thousand, two hundred eleven".