243130131996 has 24 divisors (see below), whose sum is σ = 567338756880. Its totient is φ = 81038360832.

The previous prime is 243130131983. The next prime is 243130131997. The reversal of 243130131996 is 699131031342.

243130131996 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243130131996² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130131997) 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, 422451 + ... + 815306.

It is an arithmetic number, because the mean of its divisors is an integer number (23639114870).

Almost surely, 2^243130131996 is an apocalyptic number.

It is an amenable number.

243130131996 is an abundant number, since it is smaller than the sum of its proper divisors (324208624884).

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

243130131996 is a wasteful number, since it uses less digits than its factorization.

243130131996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254133 (or 1254131 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 243130131996 in words is "two hundred forty-three billion, one hundred thirty million, one hundred thirty-one thousand, nine hundred ninety-six".