30331332240 has 160 divisors (see below), whose sum is σ = 102762279936. Its totient is φ = 7339630080.

The previous prime is 30331332223. The next prime is 30331332253. The reversal of 30331332240 is 4223313303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30331332240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1476117 + ... + 1496523.

Almost surely, 2^30331332240 is an apocalyptic number.

30331332240 is a gapful number since it is divisible by the number (30) 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 30331332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51381139968).

30331332240 is an abundant number, since it is smaller than the sum of its proper divisors (72430947696).

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

30331332240 is a wasteful number, since it uses less digits than its factorization.

30331332240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20997 (or 20991 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 24.

Adding to 30331332240 its reverse (4223313303), we get a palindrome (34554645543).

The spelling of 30331332240 in words is "thirty billion, three hundred thirty-one million, three hundred thirty-two thousand, two hundred forty".