30303131232 has 96 divisors (see below), whose sum is σ = 86826055680. Its totient is φ = 9177592320.

The previous prime is 30303131219. The next prime is 30303131233. The reversal of 30303131232 is 23213130303.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 30303131199 and 30303131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30303131233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2135553 + ... + 2149695.

It is an arithmetic number, because the mean of its divisors is an integer number (904438080).

Almost surely, 2^30303131232 is an apocalyptic number.

30303131232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30303131232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43413027840).

30303131232 is an abundant number, since it is smaller than the sum of its proper divisors (56522924448).

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

30303131232 is a wasteful number, since it uses less digits than its factorization.

30303131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16196 (or 16188 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 30303131232 its reverse (23213130303), we get a palindrome (53516261535).

The spelling of 30303131232 in words is "thirty billion, three hundred three million, one hundred thirty-one thousand, two hundred thirty-two".