523012043 has 4 divisors (see below), whose sum is σ = 526035408. Its totient is φ = 519988680.

The previous prime is 523011997. The next prime is 523012073. The reversal of 523012043 is 340210325.

It is a happy number.

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 523012043 - 2⁸ = 523011787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523012073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511423 + ... + 1511768.

It is an arithmetic number, because the mean of its divisors is an integer number (131508852).

Almost surely, 2^523012043 is an apocalyptic number.

523012043 is a deficient number, since it is larger than the sum of its proper divisors (3023365).

523012043 is a wasteful number, since it uses less digits than its factorization.

523012043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023364.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 523012043 is about 22869.4565523538. The cubic root of 523012043 is about 805.6948043752.

Adding to 523012043 its reverse (340210325), we get a palindrome (863222368).

The spelling of 523012043 in words is "five hundred twenty-three million, twelve thousand, forty-three".