511320830 has 16 divisors (see below), whose sum is σ = 924331824. Its totient is φ = 203649600.

The previous prime is 511320829. The next prime is 511320833. The reversal of 511320830 is 38023115.

It is a super-2 number, since 2×511320830² = 522897982383777800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 511320796 and 511320805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511320833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107396 + ... + 112055.

It is an arithmetic number, because the mean of its divisors is an integer number (57770739).

Almost surely, 2^511320830 is an apocalyptic number.

511320830 is a deficient number, since it is larger than the sum of its proper divisors (413010994).

511320830 is a wasteful number, since it uses less digits than its factorization.

511320830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219691.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 511320830 is about 22612.4043392117. The cubic root of 511320830 is about 799.6461090996.

Adding to 511320830 its reverse (38023115), we get a palindrome (549343945).

The spelling of 511320830 in words is "five hundred eleven million, three hundred twenty thousand, eight hundred thirty".