523430 has 16 divisors (see below), whose sum is σ = 997920. Its totient is φ = 196992.

The previous prime is 523427. The next prime is 523433. The reversal of 523430 is 34325.

It is an interprime number because it is at equal distance from previous prime (523427) and next prime (523433).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 523399 and 523408.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370 + ... + 1709.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2⁵²³⁴³⁰ is an apocalyptic number.

523430 is a deficient number, since it is larger than the sum of its proper divisors (474490).

523430 is a wasteful number, since it uses less digits than its factorization.

523430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 523430 is about 723.4846231953. The cubic root of 523430 is about 80.5909366752.

Adding to 523430 its reverse (34325), we get a palindrome (557755).

The spelling of 523430 in words is "five hundred twenty-three thousand, four hundred thirty".