513203442330 has 32 divisors (see below), whose sum is σ = 1261729441728. Its totient is φ = 133516342400.

The previous prime is 513203442307. The next prime is 513203442337. The reversal of 513203442330 is 33244302315.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (513203442337) 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 15 ways as a sum of consecutive naturals, for example, 208618056 + ... + 208620515.

It is an arithmetic number, because the mean of its divisors is an integer number (39429045054).

Almost surely, 2^513203442330 is an apocalyptic number.

513203442330 is an abundant number, since it is smaller than the sum of its proper divisors (748525999398).

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

513203442330 is a wasteful number, since it uses less digits than its factorization.

513203442330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417238622.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 513203442330 its reverse (33244302315), we get a palindrome (546447744645).

The spelling of 513203442330 in words is "five hundred thirteen billion, two hundred three million, four hundred forty-two thousand, three hundred thirty".