431231144 has 16 divisors (see below), whose sum is σ = 851114400. Its totient is φ = 204267312.

The previous prime is 431231123. The next prime is 431231147. The reversal of 431231144 is 441132134.

It is not an unprimeable number, because it can be changed into a prime (431231147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1418372 + ... + 1418675.

It is an arithmetic number, because the mean of its divisors is an integer number (53194650).

Almost surely, 2^431231144 is an apocalyptic number.

It is an amenable number.

431231144 is a deficient number, since it is larger than the sum of its proper divisors (419883256).

431231144 is a wasteful number, since it uses less digits than its factorization.

431231144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837072 (or 2837068 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 431231144 is about 20766.1056532033. The cubic root of 431231144 is about 755.5038923857.

Adding to 431231144 its reverse (441132134), we get a palindrome (872363278).

The spelling of 431231144 in words is "four hundred thirty-one million, two hundred thirty-one thousand, one hundred forty-four".