431230540 has 36 divisors (see below), whose sum is σ = 980610624. Its totient is φ = 159222336.

The previous prime is 431230537. The next prime is 431230561. The reversal of 431230540 is 45032134.

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 11 ways as a sum of consecutive naturals, for example, 60412 + ... + 67171.

It is an arithmetic number, because the mean of its divisors is an integer number (27239184).

Almost surely, 2^431230540 is an apocalyptic number.

It is an amenable number.

431230540 is an abundant number, since it is smaller than the sum of its proper divisors (549380084).

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

431230540 is a wasteful number, since it uses less digits than its factorization.

431230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127618 (or 127603 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 431230540 is about 20766.0911102692. The cubic root of 431230540 is about 755.5035396556.

Adding to 431230540 its reverse (45032134), we get a palindrome (476262674).

The spelling of 431230540 in words is "four hundred thirty-one million, two hundred thirty thousand, five hundred forty".