20300311240 has 128 divisors (see below), whose sum is σ = 50867481600. Its totient is φ = 7229249280.

The previous prime is 20300311237. The next prime is 20300311243. The reversal of 20300311240 is 4211300302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20300311237) and next prime (20300311243).

It is not an unprimeable number, because it can be changed into a prime (20300311243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5274997 + ... + 5278843.

It is an arithmetic number, because the mean of its divisors is an integer number (397402200).

Almost surely, 2^20300311240 is an apocalyptic number.

20300311240 is a gapful number since it is divisible by the number (20) 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 20300311240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25433740800).

20300311240 is an abundant number, since it is smaller than the sum of its proper divisors (30567170360).

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

20300311240 is a wasteful number, since it uses less digits than its factorization.

20300311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115 (or 4111 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20300311240 its reverse (4211300302), we get a palindrome (24511611542).

The spelling of 20300311240 in words is "twenty billion, three hundred million, three hundred eleven thousand, two hundred forty".