531523423 has 16 divisors (see below), whose sum is σ = 573143040. Its totient is φ = 491335200.

The previous prime is 531523417. The next prime is 531523429. The reversal of 531523423 is 324325135.

It is an interprime number because it is at equal distance from previous prime (531523417) and next prime (531523429).

It is a cyclic number.

It is not a de Polignac number, because 531523423 - 2⁹ = 531522911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531523391 and 531523400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531523429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384193 + ... + 385573.

It is an arithmetic number, because the mean of its divisors is an integer number (35821440).

Almost surely, 2^531523423 is an apocalyptic number.

531523423 is a deficient number, since it is larger than the sum of its proper divisors (41619617).

531523423 is a wasteful number, since it uses less digits than its factorization.

531523423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its digits is 10800, while the sum is 28.

The square root of 531523423 is about 23054.7917578971. The cubic root of 531523423 is about 810.0418730576.

Adding to 531523423 its reverse (324325135), we get a palindrome (855848558).

The spelling of 531523423 in words is "five hundred thirty-one million, five hundred twenty-three thousand, four hundred twenty-three".