431141520 has 160 divisors (see below), whose sum is σ = 1370483712. Its totient is φ = 112098816.

The previous prime is 431141519. The next prime is 431141551. The reversal of 431141520 is 25141134.

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, 2644959 + ... + 2645121.

Almost surely, 2^431141520 is an apocalyptic number.

431141520 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 431141520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685241856).

431141520 is an abundant number, since it is smaller than the sum of its proper divisors (939342192).

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

431141520 is a wasteful number, since it uses less digits than its factorization.

431141520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 431141520 is about 20763.9476015521. The cubic root of 431141520 is about 755.4515492489.

Adding to 431141520 its reverse (25141134), we get a palindrome (456282654).

The spelling of 431141520 in words is "four hundred thirty-one million, one hundred forty-one thousand, five hundred twenty".