20430331342240 has 48 divisors (see below), whose sum is σ = 50807008213920. Its totient is φ = 7742020296960.

The previous prime is 20430331342231. The next prime is 20430331342241. The reversal of 20430331342240 is 4224313303402.

It is a happy number.

20430331342240 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20430331342241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3360248826 + ... + 3360254905.

It is an arithmetic number, because the mean of its divisors is an integer number (1058479337790).

Almost surely, 2^{20430331342240} is an apocalyptic number.

20430331342240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20430331342240 is an abundant number, since it is smaller than the sum of its proper divisors (30376676871680).

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

20430331342240 is a wasteful number, since it uses less digits than its factorization.

20430331342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720503765 (or 6720503757 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 20430331342240 its reverse (4224313303402), we get a palindrome (24654644645642).

The spelling of 20430331342240 in words is "twenty trillion, four hundred thirty billion, three hundred thirty-one million, three hundred forty-two thousand, two hundred forty".