523120343 has 4 divisors (see below), whose sum is σ = 524791968. Its totient is φ = 521448720.

The previous prime is 523120337. The next prime is 523120361. The reversal of 523120343 is 343021325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523120343 - 2²² = 518926039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523120333) 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 3 ways as a sum of consecutive naturals, for example, 835343 + ... + 835968.

It is an arithmetic number, because the mean of its divisors is an integer number (131197992).

Almost surely, 2^523120343 is an apocalyptic number.

523120343 is a deficient number, since it is larger than the sum of its proper divisors (1671625).

523120343 is a wasteful number, since it uses less digits than its factorization.

523120343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671624.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 523120343 is about 22871.8242167082. The cubic root of 523120343 is about 805.7504122250.

Adding to 523120343 its reverse (343021325), we get a palindrome (866141668).

The spelling of 523120343 in words is "five hundred twenty-three million, one hundred twenty thousand, three hundred forty-three".