30142123211 has 4 divisors (see below), whose sum is σ = 31181506800. Its totient is φ = 29102739624.

The previous prime is 30142123201. The next prime is 30142123229. The reversal of 30142123211 is 11232124103.

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 30142123211 - 2²² = 30137928907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30142123201) 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, 519691751 + ... + 519691808.

It is an arithmetic number, because the mean of its divisors is an integer number (7795376700).

Almost surely, 2^30142123211 is an apocalyptic number.

30142123211 is a deficient number, since it is larger than the sum of its proper divisors (1039383589).

30142123211 is a wasteful number, since it uses less digits than its factorization.

30142123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039383588.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 30142123211 its reverse (11232124103), we get a palindrome (41374247314).

The spelling of 30142123211 in words is "thirty billion, one hundred forty-two million, one hundred twenty-three thousand, two hundred eleven".