213555348 has 36 divisors (see below), whose sum is σ = 546331968. Its totient is φ = 70326480.

The previous prime is 213555341. The next prime is 213555361. The reversal of 213555348 is 843555312.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×213555348² = 91211773318802208, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213555341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32748 + ... + 38723.

It is an arithmetic number, because the mean of its divisors is an integer number (15175888).

Almost surely, 2^213555348 is an apocalyptic number.

It is an amenable number.

213555348 is an abundant number, since it is smaller than the sum of its proper divisors (332776620).

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

213555348 is a wasteful number, since it uses less digits than its factorization.

213555348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71564 (or 71559 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 213555348 is about 14613.5330430392. The cubic root of 213555348 is about 597.7278396740.

Subtracting from 213555348 its sum of digits (36), we obtain a palindrome (213555312).

The spelling of 213555348 in words is "two hundred thirteen million, five hundred fifty-five thousand, three hundred forty-eight".