431144445 has 32 divisors (see below), whose sum is σ = 709632000. Its totient is φ = 223401024.

The previous prime is 431144431. The next prime is 431144473. The reversal of 431144445 is 544441134.

It is not a de Polignac number, because 431144445 - 2¹⁶ = 431078909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126676 + ... + 130034.

It is an arithmetic number, because the mean of its divisors is an integer number (22176000).

Almost surely, 2^431144445 is an apocalyptic number.

It is an amenable number.

431144445 is a deficient number, since it is larger than the sum of its proper divisors (278487555).

431144445 is a wasteful number, since it uses less digits than its factorization.

431144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609.

The product of its digits is 15360, while the sum is 30.

The square root of 431144445 is about 20764.0180360161. The cubic root of 431144445 is about 755.4532576522.

Adding to 431144445 its reverse (544441134), we get a palindrome (975585579).

The spelling of 431144445 in words is "four hundred thirty-one million, one hundred forty-four thousand, four hundred forty-five".