431043340 has 144 divisors (see below), whose sum is σ = 1151623872. Its totient is φ = 131963904.

The previous prime is 431043331. The next prime is 431043383. The reversal of 431043340 is 43340134.

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 47 ways as a sum of consecutive naturals, for example, 2491494 + ... + 2491666.

It is an arithmetic number, because the mean of its divisors is an integer number (7997388).

Almost surely, 2^431043340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431043340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575811936).

431043340 is an abundant number, since it is smaller than the sum of its proper divisors (720580532).

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

431043340 is a wasteful number, since it uses less digits than its factorization.

431043340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 431043340 is about 20761.5832729587. The cubic root of 431043340 is about 755.3942008220.

Adding to 431043340 its reverse (43340134), we get a palindrome (474383474).

The spelling of 431043340 in words is "four hundred thirty-one million, forty-three thousand, three hundred forty".