213011311333 has 4 divisors (see below), whose sum is σ = 215002071360. Its totient is φ = 211020551308.

The previous prime is 213011311321. The next prime is 213011311339. The reversal of 213011311333 is 333113110312.

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 a de Polignac number, because none of the positive numbers 2^k-213011311333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213011311339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995379853 + ... + 995380066.

It is an arithmetic number, because the mean of its divisors is an integer number (53750517840).

Almost surely, 2^213011311333 is an apocalyptic number.

It is an amenable number.

213011311333 is a deficient number, since it is larger than the sum of its proper divisors (1990760027).

213011311333 is a wasteful number, since it uses less digits than its factorization.

213011311333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990760026.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 213011311333 its reverse (333113110312), we get a palindrome (546124421645).

The spelling of 213011311333 in words is "two hundred thirteen billion, eleven million, three hundred eleven thousand, three hundred thirty-three".