30243403140 has 144 divisors (see below), whose sum is σ = 89982446400. Its totient is φ = 7588350720.

The previous prime is 30243403129. The next prime is 30243403147. The reversal of 30243403140 is 4130434203.

It is a self number, because there is not a number n which added to its sum of digits gives 30243403140.

It is not an unprimeable number, because it can be changed into a prime (30243403147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3222655 + ... + 3232025.

It is an arithmetic number, because the mean of its divisors is an integer number (624878100).

Almost surely, 2^30243403140 is an apocalyptic number.

30243403140 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 30243403140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44991223200).

30243403140 is an abundant number, since it is smaller than the sum of its proper divisors (59739043260).

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

30243403140 is a wasteful number, since it uses less digits than its factorization.

30243403140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9570 (or 9549 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 30243403140 its reverse (4130434203), we get a palindrome (34373837343).

The spelling of 30243403140 in words is "thirty billion, two hundred forty-three million, four hundred three thousand, one hundred forty".