523400311 has 18 divisors (see below), whose sum is σ = 629566368. Its totient is φ = 433417320.

The previous prime is 523400303. The next prime is 523400327. The reversal of 523400311 is 113004325.

It is not a de Polignac number, because 523400311 - 2³ = 523400303 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 (523400411) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 891360 + ... + 891946.

Almost surely, 2^523400311 is an apocalyptic number.

523400311 is a deficient number, since it is larger than the sum of its proper divisors (106166057).

523400311 is an frugal number, since it uses more digits than its factorization.

523400311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 523400311 is about 22877.9437668686. The cubic root of 523400311 is about 805.8941293785.

Adding to 523400311 its reverse (113004325), we get a palindrome (636404636).

The spelling of 523400311 in words is "five hundred twenty-three million, four hundred thousand, three hundred eleven".