2113220311 has 4 divisors (see below), whose sum is σ = 2113446400. Its totient is φ = 2112994224.

The previous prime is 2113220303. The next prime is 2113220321. The reversal of 2113220311 is 1130223112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113220311 - 2³ = 2113220303 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 (2113220321) 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, 98391 + ... + 117928.

It is an arithmetic number, because the mean of its divisors is an integer number (528361600).

Almost surely, 2^2113220311 is an apocalyptic number.

2113220311 is a deficient number, since it is larger than the sum of its proper divisors (226089).

2113220311 is an equidigital number, since it uses as much as digits as its factorization.

2113220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226088.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2113220311 is about 45969.7760599288. The cubic root of 2113220311 is about 1283.2607923390.

Adding to 2113220311 its reverse (1130223112), we get a palindrome (3243443423).

The spelling of 2113220311 in words is "two billion, one hundred thirteen million, two hundred twenty thousand, three hundred eleven".