531243623 has 8 divisors (see below), whose sum is σ = 536524128. Its totient is φ = 525973504.

The previous prime is 531243613. The next prime is 531243631. The reversal of 531243623 is 326342135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 531243623 - 2⁸ = 531243367 is a prime.

It is a super-2 number, since 2×531243623² = 564439573956332258, 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 (531243613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135590 + ... + 139452.

It is an arithmetic number, because the mean of its divisors is an integer number (67065516).

Almost surely, 2^531243623 is an apocalyptic number.

531243623 is a deficient number, since it is larger than the sum of its proper divisors (5280505).

531243623 is a wasteful number, since it uses less digits than its factorization.

531243623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its digits is 12960, while the sum is 29.

The square root of 531243623 is about 23048.7228062641. The cubic root of 531243623 is about 809.8997096783.

Adding to 531243623 its reverse (326342135), we get a palindrome (857585758).

The spelling of 531243623 in words is "five hundred thirty-one million, two hundred forty-three thousand, six hundred twenty-three".