213111031321 has 8 divisors (see below), whose sum is σ = 215690428800. Its totient is φ = 210531914832.

The previous prime is 213111031229. The next prime is 213111031411. The reversal of 213111031321 is 123130111312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213111031321 - 2⁹ = 213111030809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213111041321) 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 7 ways as a sum of consecutive naturals, for example, 1734480 + ... + 1853278.

It is an arithmetic number, because the mean of its divisors is an integer number (26961303600).

Almost surely, 2^213111031321 is an apocalyptic number.

It is an amenable number.

213111031321 is a deficient number, since it is larger than the sum of its proper divisors (2579397479).

213111031321 is a wasteful number, since it uses less digits than its factorization.

213111031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140495.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 213111031321 its reverse (123130111312), we get a palindrome (336241142633).

The spelling of 213111031321 in words is "two hundred thirteen billion, one hundred eleven million, thirty-one thousand, three hundred twenty-one".