2113145233 has 4 divisors (see below), whose sum is σ = 2186012340. Its totient is φ = 2040278128.

The previous prime is 2113145231. The next prime is 2113145257. The reversal of 2113145233 is 3325413112.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1121714064 + 991431169 = 33492^2 + 31487^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113145233 - 2¹ = 2113145231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113145198 and 2113145207.

It is not an unprimeable number, because it can be changed into a prime (2113145231) 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, 36433510 + ... + 36433567.

It is an arithmetic number, because the mean of its divisors is an integer number (546503085).

Almost surely, 2^2113145233 is an apocalyptic number.

It is an amenable number.

2113145233 is a deficient number, since it is larger than the sum of its proper divisors (72867107).

2113145233 is an equidigital number, since it uses as much as digits as its factorization.

2113145233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72867106.

The product of its digits is 2160, while the sum is 25.

The square root of 2113145233 is about 45968.9594509164. The cubic root of 2113145233 is about 1283.2455950287.

Adding to 2113145233 its reverse (3325413112), we get a palindrome (5438558345).

The spelling of 2113145233 in words is "two billion, one hundred thirteen million, one hundred forty-five thousand, two hundred thirty-three".