431923 has 4 divisors (see below), whose sum is σ = 445888. Its totient is φ = 417960.

The previous prime is 431911. The next prime is 431929. The reversal of 431923 is 329134.

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 431923 - 2⁵ = 431891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431894 and 431903.

It is not an unprimeable number, because it can be changed into a prime (431929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6936 + ... + 6997.

It is an arithmetic number, because the mean of its divisors is an integer number (111472).

2⁴³¹⁹²³ is an apocalyptic number.

431923 is a deficient number, since it is larger than the sum of its proper divisors (13965).

431923 is a wasteful number, since it uses less digits than its factorization.

431923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13964.

The product of its digits is 648, while the sum is 22.

The square root of 431923 is about 657.2084905112. The cubic root of 431923 is about 75.5907713416.

The spelling of 431923 in words is "four hundred thirty-one thousand, nine hundred twenty-three".