431253535242 has 32 divisors (see below), whose sum is σ = 864136209600. Its totient is φ = 143479784448.

The previous prime is 431253535213. The next prime is 431253535247. The reversal of 431253535242 is 242535352134.

It is a super-2 number, since 2×431253535242² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431253535242.

It is not an unprimeable number, because it can be changed into a prime (431253535247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15692778 + ... + 15720234.

It is an arithmetic number, because the mean of its divisors is an integer number (27004256550).

Almost surely, 2^431253535242 is an apocalyptic number.

431253535242 is an abundant number, since it is smaller than the sum of its proper divisors (432882674358).

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

431253535242 is a wasteful number, since it uses less digits than its factorization.

431253535242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32310.

The product of its digits is 432000, while the sum is 39.

Adding to 431253535242 its reverse (242535352134), we get a palindrome (673788887376).

The spelling of 431253535242 in words is "four hundred thirty-one billion, two hundred fifty-three million, five hundred thirty-five thousand, two hundred forty-two".