431431240442 has 16 divisors (see below), whose sum is σ = 651618552192. Its totient is φ = 214229473920.

The previous prime is 431431240441. The next prime is 431431240463. The reversal of 431431240442 is 244042134134.

It is a super-2 number, since 2×431431240442² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 431431240399 and 431431240408.

It is not an unprimeable number, because it can be changed into a prime (431431240441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908663 + ... + 1299434.

It is an arithmetic number, because the mean of its divisors is an integer number (40726159512).

Almost surely, 2^431431240442 is an apocalyptic number.

431431240442 is a deficient number, since it is larger than the sum of its proper divisors (220187311750).

431431240442 is a wasteful number, since it uses less digits than its factorization.

431431240442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208773.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 431431240442 its reverse (244042134134), we get a palindrome (675473374576).

The spelling of 431431240442 in words is "four hundred thirty-one billion, four hundred thirty-one million, two hundred forty thousand, four hundred forty-two".