30142140323 has 4 divisors (see below), whose sum is σ = 30299952768. Its totient is φ = 29984327880.

The previous prime is 30142140319. The next prime is 30142140331. The reversal of 30142140323 is 32304124103.

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 30142140323 - 2² = 30142140319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30142140383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78905936 + ... + 78906317.

It is an arithmetic number, because the mean of its divisors is an integer number (7574988192).

Almost surely, 2^30142140323 is an apocalyptic number.

30142140323 is a deficient number, since it is larger than the sum of its proper divisors (157812445).

30142140323 is a wasteful number, since it uses less digits than its factorization.

30142140323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157812444.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30142140323 its reverse (32304124103), we get a palindrome (62446264426).

The spelling of 30142140323 in words is "thirty billion, one hundred forty-two million, one hundred forty thousand, three hundred twenty-three".