431383012240 has 80 divisors (see below), whose sum is σ = 1035827274240. Its totient is φ = 166905031680.

The previous prime is 431383012237. The next prime is 431383012283. The reversal of 431383012240 is 42210383134.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5139087 + ... + 5222353.

It is an arithmetic number, because the mean of its divisors is an integer number (12947840928).

Almost surely, 2^431383012240 is an apocalyptic number.

431383012240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431383012240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517913637120).

431383012240 is an abundant number, since it is smaller than the sum of its proper divisors (604444262000).

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

431383012240 is a wasteful number, since it uses less digits than its factorization.

431383012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85400 (or 85394 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 431383012240 its reverse (42210383134), we get a palindrome (473593395374).

The spelling of 431383012240 in words is "four hundred thirty-one billion, three hundred eighty-three million, twelve thousand, two hundred forty".