511413231 has 64 divisors (see below), whose sum is σ = 843448320. Its totient is φ = 269377920.

The previous prime is 511413163. The next prime is 511413263. The reversal of 511413231 is 132314115.

It is not a de Polignac number, because 511413231 - 2⁷ = 511413103 is a prime.

It is a super-2 number, since 2×511413231² = 523086985683718722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 511413198 and 511413207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511413031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1944406 + ... + 1944668.

It is an arithmetic number, because the mean of its divisors is an integer number (13178880).

Almost surely, 2^511413231 is an apocalyptic number.

511413231 is a deficient number, since it is larger than the sum of its proper divisors (332035089).

511413231 is a wasteful number, since it uses less digits than its factorization.

511413231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its digits is 360, while the sum is 21.

The square root of 511413231 is about 22614.4473954152. The cubic root of 511413231 is about 799.6942743255.

Adding to 511413231 its reverse (132314115), we get a palindrome (643727346).

The spelling of 511413231 in words is "five hundred eleven million, four hundred thirteen thousand, two hundred thirty-one".