523105320 has 64 divisors (see below), whose sum is σ = 1605827520. Its totient is φ = 136249344.

The previous prime is 523105309. The next prime is 523105327. The reversal of 523105320 is 23501325.

It is not an unprimeable number, because it can be changed into a prime (523105327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45529 + ... + 55848.

It is an arithmetic number, because the mean of its divisors is an integer number (25091055).

Almost surely, 2^523105320 is an apocalyptic number.

It is an amenable number.

523105320 is an abundant number, since it is smaller than the sum of its proper divisors (1082722200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523105320 is a wasteful number, since it uses less digits than its factorization.

523105320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101434 (or 101430 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 523105320 is about 22871.4957971708. The cubic root of 523105320 is about 805.7426989556.

Adding to 523105320 its reverse (23501325), we get a palindrome (546606645).

It can be divided in two parts, 52310 and 5320, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 523105320 in words is "five hundred twenty-three million, one hundred five thousand, three hundred twenty".