511041023 has 4 divisors (see below), whose sum is σ = 514176408. Its totient is φ = 507905640.

The previous prime is 511041019. The next prime is 511041053. The reversal of 511041023 is 320140115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320140115 = 5 ⋅64028023.

It is a cyclic number.

It is not a de Polignac number, because 511041023 - 2² = 511041019 is a prime.

It is a super-2 number, since 2×511041023² = 522325854377773058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 511040992 and 511041010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511041053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1567448 + ... + 1567773.

It is an arithmetic number, because the mean of its divisors is an integer number (128544102).

Almost surely, 2^511041023 is an apocalyptic number.

511041023 is a deficient number, since it is larger than the sum of its proper divisors (3135385).

511041023 is a wasteful number, since it uses less digits than its factorization.

511041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135384.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 511041023 is about 22606.2164680426. The cubic root of 511041023 is about 799.5002206533.

Adding to 511041023 its reverse (320140115), we get a palindrome (831181138).

The spelling of 511041023 in words is "five hundred eleven million, forty-one thousand, twenty-three".