213345536 has 36 divisors (see below), whose sum is σ = 426793332. Its totient is φ = 106438656.

The previous prime is 213345523. The next prime is 213345571. The reversal of 213345536 is 635543312.

It can be written as a sum of positive squares in 2 ways, for example, as 105185536 + 108160000 = 10256^2 + 10400^2 .

It is a super-2 number, since 2×213345536² = 91032635462254592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217880 + ... + 218856.

Almost surely, 2^213345536 is an apocalyptic number.

It is an amenable number.

213345536 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

213345536 is an frugal number, since it uses more digits than its factorization.

213345536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846 (or 1832 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 213345536 is about 14606.3525905683. The cubic root of 213345536 is about 597.5320253838.

Adding to 213345536 its reverse (635543312), we get a palindrome (848888848).

The spelling of 213345536 in words is "two hundred thirteen million, three hundred forty-five thousand, five hundred thirty-six".