213502303 has 8 divisors (see below), whose sum is σ = 258355872. Its totient is φ = 172237056.

The previous prime is 213502279. The next prime is 213502309. The reversal of 213502303 is 303205312.

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 213502303 - 2⁵ = 213502271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213502309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896950 + ... + 897187.

It is an arithmetic number, because the mean of its divisors is an integer number (32294484).

Almost surely, 2^213502303 is an apocalyptic number.

213502303 is a deficient number, since it is larger than the sum of its proper divisors (44853569).

213502303 is a wasteful number, since it uses less digits than its factorization.

213502303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794161.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 213502303 is about 14611.7180030276. The cubic root of 213502303 is about 597.6783457152.

Adding to 213502303 its reverse (303205312), we get a palindrome (516707615).

It can be divided in two parts, 21350 and 2303, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 213502303 in words is "two hundred thirteen million, five hundred two thousand, three hundred three".