431344145 has 16 divisors (see below), whose sum is σ = 559726848. Its totient is φ = 317863680.

The previous prime is 431344141. The next prime is 431344181. The reversal of 431344145 is 541443134.

It is a happy number.

It is not a de Polignac number, because 431344145 - 2² = 431344141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431344141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49991 + ... + 57980.

It is an arithmetic number, because the mean of its divisors is an integer number (34982928).

Almost surely, 2^431344145 is an apocalyptic number.

It is an amenable number.

431344145 is a deficient number, since it is larger than the sum of its proper divisors (128382703).

431344145 is a wasteful number, since it uses less digits than its factorization.

431344145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108040.

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

The square root of 431344145 is about 20768.8262788247. The cubic root of 431344145 is about 755.5698780646.

Adding to 431344145 its reverse (541443134), we get a palindrome (972787279).

The spelling of 431344145 in words is "four hundred thirty-one million, three hundred forty-four thousand, one hundred forty-five".