431140420 has 24 divisors (see below), whose sum is σ = 927479448. Its totient is φ = 168249600.

The previous prime is 431140279. The next prime is 431140421. The reversal of 431140420 is 24041134.

It can be written as a sum of positive squares in 4 ways, for example, as 3147076 + 427993344 = 1774^2 + 20688^2 .

It is not an unprimeable number, because it can be changed into a prime (431140421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262071 + ... + 263710.

It is an arithmetic number, because the mean of its divisors is an integer number (38644977).

Almost surely, 2^431140420 is an apocalyptic number.

It is an amenable number.

431140420 is an abundant number, since it is smaller than the sum of its proper divisors (496339028).

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

431140420 is a wasteful number, since it uses less digits than its factorization.

431140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525831 (or 525829 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 431140420 is about 20763.9211133158. The cubic root of 431140420 is about 755.4509067705.

Adding to 431140420 its reverse (24041134), we get a palindrome (455181554).

The spelling of 431140420 in words is "four hundred thirty-one million, one hundred forty thousand, four hundred twenty".