513630234 has 40 divisors (see below), whose sum is σ = 1239448980. Its totient is φ = 158039424.

The previous prime is 513630233. The next prime is 513630239. The reversal of 513630234 is 432036315.

It is a happy number.

513630234 is a `hidden beast` number, since 5 + 1 + 3 + 630 + 23 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 492973209 + 20657025 = 22203^2 + 4545^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 513630198 and 513630207.

It is not an unprimeable number, because it can be changed into a prime (513630233) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 119839 + ... + 124050.

Almost surely, 2^513630234 is an apocalyptic number.

513630234 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

513630234 is an abundant number, since it is smaller than the sum of its proper divisors (725818746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513630234 is a wasteful number, since it uses less digits than its factorization.

513630234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243916 (or 243907 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 513630234 is about 22663.4117908138. The cubic root of 513630234 is about 800.8481806276.

Adding to 513630234 its reverse (432036315), we get a palindrome (945666549).

The spelling of 513630234 in words is "five hundred thirteen million, six hundred thirty thousand, two hundred thirty-four".