213443244233 has 6 divisors (see below), whose sum is σ = 220550616522. Its totient is φ = 206557977360.

The previous prime is 213443244227. The next prime is 213443244251. The reversal of 213443244233 is 332442344312.

It can be written as a sum of positive squares in only one way, i.e., 177824986249 + 35618257984 = 421693^2 + 188728^2 .

It is not a de Polignac number, because 213443244233 - 2¹² = 213443240137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213443244193 and 213443244202.

It is not an unprimeable number, because it can be changed into a prime (213443244263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111051716 + ... + 111053637.

It is an arithmetic number, because the mean of its divisors is an integer number (36758436087).

Almost surely, 2^213443244233 is an apocalyptic number.

It is an amenable number.

213443244233 is a deficient number, since it is larger than the sum of its proper divisors (7107372289).

213443244233 is an equidigital number, since it uses as much as digits as its factorization.

213443244233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222105415 (or 222105384 counting only the distinct ones).

The product of its digits is 165888, while the sum is 35.

Adding to 213443244233 its reverse (332442344312), we get a palindrome (545885588545).

The spelling of 213443244233 in words is "two hundred thirteen billion, four hundred forty-three million, two hundred forty-four thousand, two hundred thirty-three".