213305424503 has 8 divisors (see below), whose sum is σ = 217339032816. Its totient is φ = 209272148800.

The previous prime is 213305424499. The next prime is 213305424511. The reversal of 213305424503 is 305424503312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213305424503 - 2² = 213305424499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213305424503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213305424523) 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, 1490363 + ... + 1627203.

It is an arithmetic number, because the mean of its divisors is an integer number (27167379102).

Almost surely, 2^213305424503 is an apocalyptic number.

213305424503 is a deficient number, since it is larger than the sum of its proper divisors (4033608313).

213305424503 is a wasteful number, since it uses less digits than its factorization.

213305424503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166305.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 213305424503 its reverse (305424503312), we get a palindrome (518729927815).

The spelling of 213305424503 in words is "two hundred thirteen billion, three hundred five million, four hundred twenty-four thousand, five hundred three".