213331323237 has 4 divisors (see below), whose sum is σ = 284441764320. Its totient is φ = 142220882156.

The previous prime is 213331323221. The next prime is 213331323301. The reversal of 213331323237 is 732323133312.

213331323237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213331323237 - 2⁴ = 213331323221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213331323198 and 213331323207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213331343237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35555220537 + ... + 35555220542.

It is an arithmetic number, because the mean of its divisors is an integer number (71110441080).

Almost surely, 2^213331323237 is an apocalyptic number.

It is an amenable number.

213331323237 is a deficient number, since it is larger than the sum of its proper divisors (71110441083).

213331323237 is an equidigital number, since it uses as much as digits as its factorization.

213331323237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71110441082.

The product of its digits is 40824, while the sum is 33.

Adding to 213331323237 its reverse (732323133312), we get a palindrome (945654456549).

The spelling of 213331323237 in words is "two hundred thirteen billion, three hundred thirty-one million, three hundred twenty-three thousand, two hundred thirty-seven".