30203144312 has 64 divisors (see below), whose sum is σ = 62339760000. Its totient is φ = 13604503680.

The previous prime is 30203144281. The next prime is 30203144369. The reversal of 30203144312 is 21344130203.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7569614 + ... + 7573602.

It is an arithmetic number, because the mean of its divisors is an integer number (974058750).

Almost surely, 2^30203144312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30203144312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31169880000).

30203144312 is an abundant number, since it is smaller than the sum of its proper divisors (32136615688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30203144312 is a wasteful number, since it uses less digits than its factorization.

30203144312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764 (or 4760 counting only the distinct ones).

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

Adding to 30203144312 its reverse (21344130203), we get a palindrome (51547274515).

The spelling of 30203144312 in words is "thirty billion, two hundred three million, one hundred forty-four thousand, three hundred twelve".