431543320242 has 16 divisors (see below), whose sum is σ = 900612146880. Its totient is φ = 137593522352.

The previous prime is 431543320231. The next prime is 431543320303. The reversal of 431543320242 is 242023345134.

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, 1563562617 + ... + 1563562892.

It is an arithmetic number, because the mean of its divisors is an integer number (56288259180).

Almost surely, 2^431543320242 is an apocalyptic number.

431543320242 is an abundant number, since it is smaller than the sum of its proper divisors (469068826638).

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

431543320242 is a wasteful number, since it uses less digits than its factorization.

431543320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127125537.

The product of its (nonzero) digits is 69120, while the sum is 33.

Adding to 431543320242 its reverse (242023345134), we get a palindrome (673566665376).

The spelling of 431543320242 in words is "four hundred thirty-one billion, five hundred forty-three million, three hundred twenty thousand, two hundred forty-two".