243421021431344 has 40 divisors (see below), whose sum is σ = 502604736238080. Its totient is φ = 113941754704448.

The previous prime is 243421021431323. The next prime is 243421021431433. The reversal of 243421021431344 is 443134120124342.

It is a junction number, because it is equal to n+sod(n) for n = 243421021431298 and 243421021431307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7036899374 + ... + 7036933965.

It is an arithmetic number, because the mean of its divisors is an integer number (12565118405952).

Almost surely, 2^{243421021431344} is an apocalyptic number.

It is an amenable number.

243421021431344 is an abundant number, since it is smaller than the sum of its proper divisors (259183714806736).

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

243421021431344 is a wasteful number, since it uses less digits than its factorization.

243421021431344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14073833417 (or 14073833411 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

Adding to 243421021431344 its reverse (443134120124342), we get a palindrome (686555141555686).

The spelling of 243421021431344 in words is "two hundred forty-three trillion, four hundred twenty-one billion, twenty-one million, four hundred thirty-one thousand, three hundred forty-four".