431440213242 has 16 divisors (see below), whose sum is σ = 863201590272. Its totient is φ = 143759877120.

The previous prime is 431440213219. The next prime is 431440213279. The reversal of 431440213242 is 242312044134.

It is a super-2 number, since 2×431440213242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13364359 + ... + 13396602.

It is an arithmetic number, because the mean of its divisors is an integer number (53950099392).

Almost surely, 2^431440213242 is an apocalyptic number.

431440213242 is an abundant number, since it is smaller than the sum of its proper divisors (431761377030).

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

431440213242 is a wasteful number, since it uses less digits than its factorization.

431440213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26763653.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 431440213242 its reverse (242312044134), we get a palindrome (673752257376).

The spelling of 431440213242 in words is "four hundred thirty-one billion, four hundred forty million, two hundred thirteen thousand, two hundred forty-two".