213054856321 has 4 divisors (see below), whose sum is σ = 213057074944. Its totient is φ = 213052637700.

The previous prime is 213054856279. The next prime is 213054856337. The reversal of 213054856321 is 123658450312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213054856321 - 2³¹ = 210907372673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213054856621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958425 + ... + 1159606.

It is an arithmetic number, because the mean of its divisors is an integer number (53264268736).

Almost surely, 2^213054856321 is an apocalyptic number.

It is an amenable number.

213054856321 is a deficient number, since it is larger than the sum of its proper divisors (2218623).

213054856321 is a wasteful number, since it uses less digits than its factorization.

213054856321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218622.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 213054856321 in words is "two hundred thirteen billion, fifty-four million, eight hundred fifty-six thousand, three hundred twenty-one".