243431553444 has 48 divisors (see below), whose sum is σ = 578524638720. Its totient is φ = 79646883840.

The previous prime is 243431553359. The next prime is 243431553473. The reversal of 243431553444 is 444355134342.

It is a super-3 number, since 3×243431553444³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 243431553396 and 243431553405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3492 + ... + 697764.

It is an arithmetic number, because the mean of its divisors is an integer number (12052596640).

Almost surely, 2^243431553444 is an apocalyptic number.

It is an amenable number.

243431553444 is an abundant number, since it is smaller than the sum of its proper divisors (335093085276).

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

243431553444 is a wasteful number, since it uses less digits than its factorization.

243431553444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694820 (or 694818 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 42.

Adding to 243431553444 its reverse (444355134342), we get a palindrome (687786687786).

The spelling of 243431553444 in words is "two hundred forty-three billion, four hundred thirty-one million, five hundred fifty-three thousand, four hundred forty-four".