213243202342312 has 8 divisors (see below), whose sum is σ = 399831004391850. Its totient is φ = 106621601171152.

The previous prime is 213243202342307. The next prime is 213243202342343.

It is a happy number.

213243202342312 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 208408894267876 + 4834308074436 = 14436374^2 + 2198706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13327700146387 + ... + 13327700146402.

Almost surely, 2^{213243202342312} is an apocalyptic number.

It is an amenable number.

213243202342312 is a deficient number, since it is larger than the sum of its proper divisors (186587802049538).

213243202342312 is a wasteful number, since it uses less digits than its factorization.

213243202342312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26655400292795 (or 26655400292791 counting only the distinct ones).

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

It can be divided in two parts, 21324320 and 2342312, that added together give a palindrome (23666632).

The spelling of 213243202342312 in words is "two hundred thirteen trillion, two hundred forty-three billion, two hundred two million, three hundred forty-two thousand, three hundred twelve".