2113311445 has 24 divisors (see below), whose sum is σ = 2953135800. Its totient is φ = 1447592832.

The previous prime is 2113311439. The next prime is 2113311451. The reversal of 2113311445 is 5441133112.

It is an interprime number because it is at equal distance from previous prime (2113311439) and next prime (2113311451).

It can be written as a sum of positive squares in 4 ways, for example, as 8520561 + 2104790884 = 2919^2 + 45878^2 .

It is not a de Polignac number, because 2113311445 - 2⁵ = 2113311413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257871 + ... + 265939.

It is an arithmetic number, because the mean of its divisors is an integer number (123047325).

Almost surely, 2^2113311445 is an apocalyptic number.

It is an amenable number.

2113311445 is a deficient number, since it is larger than the sum of its proper divisors (839824355).

2113311445 is a wasteful number, since it uses less digits than its factorization.

2113311445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9157 (or 9150 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 2113311445 is about 45970.7672874839. The cubic root of 2113311445 is about 1283.2792392259.

Adding to 2113311445 its reverse (5441133112), we get a palindrome (7554444557).

The spelling of 2113311445 in words is "two billion, one hundred thirteen million, three hundred eleven thousand, four hundred forty-five".