431913 has 4 divisors (see below), whose sum is σ = 575888. Its totient is φ = 287940.

The previous prime is 431911. The next prime is 431929. The reversal of 431913 is 319134.

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 431913 - 2¹ = 431911 is a prime.

It is a D-number.

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 431913.

It is not an unprimeable number, because it can be changed into a prime (431911) 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, 71983 + ... + 71988.

It is an arithmetic number, because the mean of its divisors is an integer number (143972).

2⁴³¹⁹¹³ is an apocalyptic number.

It is an amenable number.

431913 is a deficient number, since it is larger than the sum of its proper divisors (143975).

431913 is a wasteful number, since it uses less digits than its factorization.

431913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143974.

The product of its digits is 324, while the sum is 21.

The square root of 431913 is about 657.2008825314. The cubic root of 431913 is about 75.5901879710.

The spelling of 431913 in words is "four hundred thirty-one thousand, nine hundred thirteen".