30321005240 has 64 divisors (see below), whose sum is σ = 69458558400. Its totient is φ = 11910592512.

The previous prime is 30321005219. The next prime is 30321005243. The reversal of 30321005240 is 4250012303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30321005243) 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, 461909 + ... + 523451.

It is an arithmetic number, because the mean of its divisors is an integer number (1085289975).

Almost surely, 2^30321005240 is an apocalyptic number.

It is an amenable number.

30321005240 is an abundant number, since it is smaller than the sum of its proper divisors (39137553160).

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

30321005240 is a wasteful number, since it uses less digits than its factorization.

30321005240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61776 (or 61772 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 30321005240 its reverse (4250012303), we get a palindrome (34571017543).

The spelling of 30321005240 in words is "thirty billion, three hundred twenty-one million, five thousand, two hundred forty".