531323122315 has 4 divisors (see below), whose sum is σ = 637587746784. Its totient is φ = 425058497848.

The previous prime is 531323122261. The next prime is 531323122327. The reversal of 531323122315 is 513221323135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 513221323135 = 5 ⋅102644264627.

It is a cyclic number.

It is not a de Polignac number, because 531323122315 - 2¹⁵ = 531323089547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53132312227 + ... + 53132312236.

It is an arithmetic number, because the mean of its divisors is an integer number (159396936696).

Almost surely, 2^531323122315 is an apocalyptic number.

531323122315 is a deficient number, since it is larger than the sum of its proper divisors (106264624469).

531323122315 is a wasteful number, since it uses less digits than its factorization.

531323122315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106264624468.

The product of its digits is 16200, while the sum is 31.

The spelling of 531323122315 in words is "five hundred thirty-one billion, three hundred twenty-three million, one hundred twenty-two thousand, three hundred fifteen".