213443344312 has 16 divisors (see below), whose sum is σ = 436588659000. Its totient is φ = 97019701920.

The previous prime is 213443344273. The next prime is 213443344381.

213443344312 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×213443344312² (a number of 23 digits) contains 22 as substring.

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, 1212746187 + ... + 1212746362.

Almost surely, 2^213443344312 is an apocalyptic number.

213443344312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213443344312 is an abundant number, since it is smaller than the sum of its proper divisors (223145314688).

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

213443344312 is a wasteful number, since it uses less digits than its factorization.

213443344312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425492566 (or 2425492562 counting only the distinct ones).

The product of its digits is 82944, while the sum is 34.

It can be divided in two parts, 213443 and 344312, that added together give a palindrome (557755).

The spelling of 213443344312 in words is "two hundred thirteen billion, four hundred forty-three million, three hundred forty-four thousand, three hundred twelve".