431441311 has 4 divisors (see below), whose sum is σ = 493075792. Its totient is φ = 369806832.

The previous prime is 431441287. The next prime is 431441377. The reversal of 431441311 is 113144134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 431441311 - 2⁷ = 431441183 is a prime.

It is a super-2 number, since 2×431441311² = 372283209674797442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431441111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30817230 + ... + 30817243.

It is an arithmetic number, because the mean of its divisors is an integer number (123268948).

Almost surely, 2^431441311 is an apocalyptic number.

431441311 is a deficient number, since it is larger than the sum of its proper divisors (61634481).

431441311 is an equidigital number, since it uses as much as digits as its factorization.

431441311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61634480.

The product of its digits is 576, while the sum is 22.

The square root of 431441311 is about 20771.1653741431. The cubic root of 431441311 is about 755.6266078565.

Adding to 431441311 its reverse (113144134), we get a palindrome (544585445).

The spelling of 431441311 in words is "four hundred thirty-one million, four hundred forty-one thousand, three hundred eleven".