30420112312 has 8 divisors (see below), whose sum is σ = 57037710600. Its totient is φ = 15210056152.

The previous prime is 30420112277. The next prime is 30420112313. The reversal of 30420112312 is 21321102403.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30420112312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420112313) 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 as a sum of consecutive naturals, namely, 1901257012 + ... + 1901257027.

It is an arithmetic number, because the mean of its divisors is an integer number (7129713825).

Almost surely, 2^30420112312 is an apocalyptic number.

It is an amenable number.

30420112312 is a deficient number, since it is larger than the sum of its proper divisors (26617598288).

30420112312 is a wasteful number, since it uses less digits than its factorization.

30420112312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802514045 (or 3802514041 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30420112312 its reverse (21321102403), we get a palindrome (51741214715).

Subtracting from 30420112312 its reverse (21321102403), we obtain a palindrome (9099009909).

The spelling of 30420112312 in words is "thirty billion, four hundred twenty million, one hundred twelve thousand, three hundred twelve".