431111323 has 4 divisors (see below), whose sum is σ = 431321760. Its totient is φ = 430900888.

The previous prime is 431111321. The next prime is 431111357. The reversal of 431111323 is 323111134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323111134 = 2 ⋅161555567.

It is a cyclic number.

It is not a de Polignac number, because 431111323 - 2¹ = 431111321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431111323.

It is not an unprimeable number, because it can be changed into a prime (431111321) 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, 102115 + ... + 106252.

It is an arithmetic number, because the mean of its divisors is an integer number (107830440).

Almost surely, 2^431111323 is an apocalyptic number.

431111323 is a deficient number, since it is larger than the sum of its proper divisors (210437).

431111323 is a wasteful number, since it uses less digits than its factorization.

431111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210436.

The product of its digits is 216, while the sum is 19.

The square root of 431111323 is about 20763.2204390359. The cubic root of 431111323 is about 755.4339116504.

Adding to 431111323 its reverse (323111134), we get a palindrome (754222457).

The spelling of 431111323 in words is "four hundred thirty-one million, one hundred eleven thousand, three hundred twenty-three".