431334240 has 48 divisors (see below), whose sum is σ = 1358704368. Its totient is φ = 115022336.

The previous prime is 431334229. The next prime is 431334259. The reversal of 431334240 is 42433134.

It is a tau number, because it is divible by the number of its divisors (48).

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 431334240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448827 + ... + 449786.

It is an arithmetic number, because the mean of its divisors is an integer number (28306341).

Almost surely, 2^431334240 is an apocalyptic number.

431334240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431334240 is an abundant number, since it is smaller than the sum of its proper divisors (927370128).

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

431334240 is a wasteful number, since it uses less digits than its factorization.

431334240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898631 (or 898623 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 431334240 is about 20768.5878191080. The cubic root of 431334240 is about 755.5640946107.

Adding to 431334240 its reverse (42433134), we get a palindrome (473767374).

The spelling of 431334240 in words is "four hundred thirty-one million, three hundred thirty-four thousand, two hundred forty".