431144534 has 16 divisors (see below), whose sum is σ = 652011360. Its totient is φ = 213814080.

The previous prime is 431144503. The next prime is 431144543. The reversal of 431144534 is 435441134.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 431144497 and 431144506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157562 + ... + 160274.

It is an arithmetic number, because the mean of its divisors is an integer number (40750710).

Almost surely, 2^431144534 is an apocalyptic number.

431144534 is a deficient number, since it is larger than the sum of its proper divisors (220866826).

431144534 is a wasteful number, since it uses less digits than its factorization.

431144534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

The product of its digits is 11520, while the sum is 29.

The square root of 431144534 is about 20764.0201791464. The cubic root of 431144534 is about 755.4533096343.

Adding to 431144534 its reverse (435441134), we get a palindrome (866585668).

The spelling of 431144534 in words is "four hundred thirty-one million, one hundred forty-four thousand, five hundred thirty-four".