201242231031340 has 24 divisors (see below), whose sum is σ = 424376922352320. Its totient is φ = 80160085329408.

The previous prime is 201242231031323. The next prime is 201242231031341. The reversal of 201242231031340 is 43130132242102.

It is a junction number, because it is equal to n+sod(n) for n = 201242231031299 and 201242231031308.

It is not an unprimeable number, because it can be changed into a prime (201242231031341) 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, 21050437797 + ... + 21050447356.

It is an arithmetic number, because the mean of its divisors is an integer number (17682371764680).

Almost surely, 2^{201242231031340} is an apocalyptic number.

201242231031340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201242231031340 is an abundant number, since it is smaller than the sum of its proper divisors (223134691320980).

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

201242231031340 is a wasteful number, since it uses less digits than its factorization.

201242231031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42100885401 (or 42100885399 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 201242231031340 its reverse (43130132242102), we get a palindrome (244372363273442).

The spelling of 201242231031340 in words is "two hundred one trillion, two hundred forty-two billion, two hundred thirty-one million, thirty-one thousand, three hundred forty".