243131103340 has 48 divisors (see below), whose sum is σ = 542988482400. Its totient is φ = 91184044032.

The previous prime is 243131103311. The next prime is 243131103349. The reversal of 243131103340 is 43301131342.

It is a super-2 number, since 2×243131103340² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243131103349) 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, 3261175 + ... + 3334894.

It is an arithmetic number, because the mean of its divisors is an integer number (11312260050).

Almost surely, 2^243131103340 is an apocalyptic number.

243131103340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243131103340 is an abundant number, since it is smaller than the sum of its proper divisors (299857379060).

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

243131103340 is a wasteful number, since it uses less digits than its factorization.

243131103340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6596194 (or 6596192 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 243131103340 its reverse (43301131342), we get a palindrome (286432234682).

The spelling of 243131103340 in words is "two hundred forty-three billion, one hundred thirty-one million, one hundred three thousand, three hundred forty".