243131442132 has 12 divisors (see below), whose sum is σ = 567306698336. Its totient is φ = 81043814040.

The previous prime is 243131442131. The next prime is 243131442137. The reversal of 243131442132 is 231244131342.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×243131442132² (a number of 24 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 243131442132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243131442131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10130476744 + ... + 10130476767.

Almost surely, 2^243131442132 is an apocalyptic number.

It is an amenable number.

243131442132 is an abundant number, since it is smaller than the sum of its proper divisors (324175256204).

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

243131442132 is a wasteful number, since it uses less digits than its factorization.

243131442132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20260953518 (or 20260953516 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

Adding to 243131442132 its reverse (231244131342), we get a palindrome (474375573474).

The spelling of 243131442132 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred forty-two thousand, one hundred thirty-two".