431241140 has 48 divisors (see below), whose sum is σ = 989561664. Its totient is φ = 156556800.

The previous prime is 431241131. The next prime is 431241143. The reversal of 431241140 is 41142134.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431241143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177212 + ... + 179628.

It is an arithmetic number, because the mean of its divisors is an integer number (20615868).

Almost surely, 2^431241140 is an apocalyptic number.

It is an amenable number.

431241140 is an abundant number, since it is smaller than the sum of its proper divisors (558320524).

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

431241140 is a wasteful number, since it uses less digits than its factorization.

431241140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248 (or 3246 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 431241140 is about 20766.3463324678. The cubic root of 431241140 is about 755.5097299036.

Adding to 431241140 its reverse (41142134), we get a palindrome (472383274).

The spelling of 431241140 in words is "four hundred thirty-one million, two hundred forty-one thousand, one hundred forty".