30312121142 has 8 divisors (see below), whose sum is σ = 46326072096. Its totient is φ = 14870097112.

The previous prime is 30312121123. The next prime is 30312121187. The reversal of 30312121142 is 24112121303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142981598 + ... + 142981809.

It is an arithmetic number, because the mean of its divisors is an integer number (5790759012).

Almost surely, 2^30312121142 is an apocalyptic number.

30312121142 is a deficient number, since it is larger than the sum of its proper divisors (16013950954).

30312121142 is a wasteful number, since it uses less digits than its factorization.

30312121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285963462.

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

Adding to 30312121142 its reverse (24112121303), we get a palindrome (54424242445).

The spelling of 30312121142 in words is "thirty billion, three hundred twelve million, one hundred twenty-one thousand, one hundred forty-two".