531200023 has 4 divisors (see below), whose sum is σ = 531483120. Its totient is φ = 530916928.

The previous prime is 531200011. The next prime is 531200041. The reversal of 531200023 is 320002135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531200023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531200093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138715 + ... + 142492.

It is an arithmetic number, because the mean of its divisors is an integer number (132870780).

Almost surely, 2^531200023 is an apocalyptic number.

531200023 is a deficient number, since it is larger than the sum of its proper divisors (283097).

531200023 is a wasteful number, since it uses less digits than its factorization.

531200023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283096.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 531200023 is about 23047.7769643842. The cubic root of 531200023 is about 809.8775524909.

Adding to 531200023 its reverse (320002135), we get a palindrome (851202158).

The spelling of 531200023 in words is "five hundred thirty-one million, two hundred thousand, twenty-three".