431132313 has 4 divisors (see below), whose sum is σ = 574843088. Its totient is φ = 287421540.

The previous prime is 431132243. The next prime is 431132321. The reversal of 431132313 is 313231134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 431132313 - 2²⁰ = 430083737 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 431132313.

It is not an unprimeable number, because it can be changed into a prime (431132413) 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, 71855383 + ... + 71855388.

It is an arithmetic number, because the mean of its divisors is an integer number (143710772).

Almost surely, 2^431132313 is an apocalyptic number.

It is an amenable number.

431132313 is a deficient number, since it is larger than the sum of its proper divisors (143710775).

431132313 is a wasteful number, since it uses less digits than its factorization.

431132313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143710774.

The product of its digits is 648, while the sum is 21.

The square root of 431132313 is about 20763.7258939719. The cubic root of 431132313 is about 755.4461716706.

Adding to 431132313 its reverse (313231134), we get a palindrome (744363447).

The spelling of 431132313 in words is "four hundred thirty-one million, one hundred thirty-two thousand, three hundred thirteen".