511023223 has 16 divisors (see below), whose sum is σ = 547278336. Its totient is φ = 476007840.

The previous prime is 511023197. The next prime is 511023299. The reversal of 511023223 is 322320115.

It is a cyclic number.

It is not a de Polignac number, because 511023223 - 2²⁵ = 477468791 is a prime.

It is a super-2 number, since 2×511023223² = 522289468890615458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511023223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511023323) 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, 481113 + ... + 482173.

It is an arithmetic number, because the mean of its divisors is an integer number (34204896).

Almost surely, 2^511023223 is an apocalyptic number.

511023223 is a deficient number, since it is larger than the sum of its proper divisors (36255113).

511023223 is a wasteful number, since it uses less digits than its factorization.

511023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614.

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

The square root of 511023223 is about 22605.8227675968. The cubic root of 511023223 is about 799.4909381179.

Adding to 511023223 its reverse (322320115), we get a palindrome (833343338).

The spelling of 511023223 in words is "five hundred eleven million, twenty-three thousand, two hundred twenty-three".