431244240 has 160 divisors (see below), whose sum is σ = 1542758400. Its totient is φ = 97608192.

The previous prime is 431244217. The next prime is 431244251. The reversal of 431244240 is 42442134.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 431244240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178561 + ... + 180959.

It is an arithmetic number, because the mean of its divisors is an integer number (9642240).

Almost surely, 2^431244240 is an apocalyptic number.

431244240 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 431244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771379200).

431244240 is an abundant number, since it is smaller than the sum of its proper divisors (1111514160).

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

431244240 is a wasteful number, since it uses less digits than its factorization.

431244240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 431244240 is about 20766.4209723293. The cubic root of 431244240 is about 755.5115402400.

Adding to 431244240 its reverse (42442134), we get a palindrome (473686374).

The spelling of 431244240 in words is "four hundred thirty-one million, two hundred forty-four thousand, two hundred forty".