213220311013 has 4 divisors (see below), whose sum is σ = 213251549760. Its totient is φ = 213189072268.

The previous prime is 213220311001. The next prime is 213220311053. The reversal of 213220311013 is 310113022312.

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 213220311013 - 2⁵ = 213220310981 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 (213220311053) 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, 15609133 + ... + 15622786.

It is an arithmetic number, because the mean of its divisors is an integer number (53312887440).

Almost surely, 2^213220311013 is an apocalyptic number.

It is an amenable number.

213220311013 is a deficient number, since it is larger than the sum of its proper divisors (31238747).

213220311013 is an equidigital number, since it uses as much as digits as its factorization.

213220311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31238746.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213220311013 its reverse (310113022312), we get a palindrome (523333333325).

The spelling of 213220311013 in words is "two hundred thirteen billion, two hundred twenty million, three hundred eleven thousand, thirteen".