523031311 has 8 divisors (see below), whose sum is σ = 572073984. Its totient is φ = 474237720.

The previous prime is 523031309. The next prime is 523031321. The reversal of 523031311 is 113130325.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523031311 - 2¹ = 523031309 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 (523031321) 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 7 ways as a sum of consecutive naturals, for example, 57861 + ... + 66286.

It is an arithmetic number, because the mean of its divisors is an integer number (71509248).

Almost surely, 2^523031311 is an apocalyptic number.

523031311 is a deficient number, since it is larger than the sum of its proper divisors (49042673).

523031311 is a wasteful number, since it uses less digits than its factorization.

523031311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124541.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 523031311 is about 22869.8778090308. The cubic root of 523031311 is about 805.7046983073.

Adding to 523031311 its reverse (113130325), we get a palindrome (636161636).

The spelling of 523031311 in words is "five hundred twenty-three million, thirty-one thousand, three hundred eleven".