213532513443 has 8 divisors (see below), whose sum is σ = 316344464400. Its totient is φ = 142355008944.

The previous prime is 213532513421. The next prime is 213532513457. The reversal of 213532513443 is 344315235312.

213532513443 is a `hidden beast` number, since 2 + 1 + 3 + 532 + 51 + 34 + 43 = 666.

It is not a de Polignac number, because 213532513443 - 2¹⁶ = 213532447907 is a prime.

It is a super-2 number, since 2×213532513443² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213532513398 and 213532513407.

It is not an unprimeable number, because it can be changed into a prime (213532513463) 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, 3954305778 + ... + 3954305831.

It is an arithmetic number, because the mean of its divisors is an integer number (39543058050).

Almost surely, 2^213532513443 is an apocalyptic number.

213532513443 is a deficient number, since it is larger than the sum of its proper divisors (102811950957).

213532513443 is an equidigital number, since it uses as much as digits as its factorization.

213532513443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908611618 (or 7908611612 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

Adding to 213532513443 its reverse (344315235312), we get a palindrome (557847748755).

The spelling of 213532513443 in words is "two hundred thirteen billion, five hundred thirty-two million, five hundred thirteen thousand, four hundred forty-three".