431523 has 6 divisors (see below), whose sum is σ = 623324. Its totient is φ = 287676.

The previous prime is 431521. The next prime is 431533. The reversal of 431523 is 325134.

It is not a de Polignac number, because 431523 - 2¹ = 431521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431496 and 431505.

It is not an unprimeable number, because it can be changed into a prime (431521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23965 + ... + 23982.

2⁴³¹⁵²³ is an apocalyptic number.

431523 is a deficient number, since it is larger than the sum of its proper divisors (191801).

431523 is a wasteful number, since it uses less digits than its factorization.

431523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47953 (or 47950 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 431523 is about 656.9041025903. The cubic root of 431523 is about 75.5674294904.

Adding to 431523 its reverse (325134), we get a palindrome (756657).

The spelling of 431523 in words is "four hundred thirty-one thousand, five hundred twenty-three".