531323323 has 4 divisors (see below), whose sum is σ = 531547200. Its totient is φ = 531099448.

The previous prime is 531323279. The next prime is 531323329. The reversal of 531323323 is 323323135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323323135 = 5 ⋅64664627.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531323323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531323329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108340 + ... + 113137.

It is an arithmetic number, because the mean of its divisors is an integer number (132886800).

Almost surely, 2^531323323 is an apocalyptic number.

531323323 is a deficient number, since it is larger than the sum of its proper divisors (223877).

531323323 is a wasteful number, since it uses less digits than its factorization.

531323323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223876.

The product of its digits is 4860, while the sum is 25.

The square root of 531323323 is about 23050.4516875483. The cubic root of 531323323 is about 809.9402094768.

Adding to 531323323 its reverse (323323135), we get a palindrome (854646458).

The spelling of 531323323 in words is "five hundred thirty-one million, three hundred twenty-three thousand, three hundred twenty-three".