523431 has 12 divisors (see below), whose sum is σ = 796120. Its totient is φ = 330480.

The previous prime is 523427. The next prime is 523433. The reversal of 523431 is 134325.

It is not a de Polignac number, because 523431 - 2² = 523427 is a prime.

It is a super-2 number, since 2×523431² = 547960023522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1360 + ... + 1701.

2⁵²³⁴³¹ is an apocalyptic number.

523431 is a deficient number, since it is larger than the sum of its proper divisors (272689).

523431 is a wasteful number, since it uses less digits than its factorization.

523431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086 (or 3083 counting only the distinct ones).

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

The square root of 523431 is about 723.4853142946. The cubic root of 523431 is about 80.5909879975.

Adding to 523431 its reverse (134325), we get a palindrome (657756).

It can be divided in two parts, 5 and 23431, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 523431 in words is "five hundred twenty-three thousand, four hundred thirty-one".