431120340 has 192 divisors, whose sum is σ = 1623283200. Its totient is φ = 92731392.

The previous prime is 431120311. The next prime is 431120341. The reversal of 431120340 is 43021134.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431120341) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 60906 + ... + 67614.

It is an arithmetic number, because the mean of its divisors is an integer number (8454600).

Almost surely, 2^431120340 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 431120340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811641600).

431120340 is an abundant number, since it is smaller than the sum of its proper divisors (1192162860).

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

431120340 is a wasteful number, since it uses less digits than its factorization.

431120340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6751 (or 6743 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 431120340 is about 20763.4375766635. The cubic root of 431120340 is about 755.4391784263.

Adding to 431120340 its reverse (43021134), we get a palindrome (474141474).

The spelling of 431120340 in words is "four hundred thirty-one million, one hundred twenty thousand, three hundred forty".