523369813 has 12 divisors (see below), whose sum is σ = 544630944. Its totient is φ = 502664400.

The previous prime is 523369811. The next prime is 523369831. The reversal of 523369813 is 318963325.

It is not a de Polignac number, because 523369813 - 2¹ = 523369811 is a prime.

It is a super-2 number, since 2×523369813² = 547831922319309938, 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 (523369811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158368 + ... + 161638.

It is an arithmetic number, because the mean of its divisors is an integer number (45385912).

Almost surely, 2^523369813 is an apocalyptic number.

It is an amenable number.

523369813 is a deficient number, since it is larger than the sum of its proper divisors (21261131).

523369813 is an equidigital number, since it uses as much as digits as its factorization.

523369813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436 (or 3375 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 523369813 is about 22877.2772199840. The cubic root of 523369813 is about 805.8784761993.

The spelling of 523369813 in words is "five hundred twenty-three million, three hundred sixty-nine thousand, eight hundred thirteen".