2151305113 has 4 divisors (see below), whose sum is σ = 2151549108. Its totient is φ = 2151061120.

The previous prime is 2151305099. The next prime is 2151305129. The reversal of 2151305113 is 3115031512.

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 237067609 + 1914237504 = 15397^2 + 43752^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151305113 - 2⁵ = 2151305081 is a prime.

It is a super-2 number, since 2×2151305113² = 9256227378439885538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151305213) 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, 108256 + ... + 126577.

It is an arithmetic number, because the mean of its divisors is an integer number (537887277).

Almost surely, 2^2151305113 is an apocalyptic number.

It is an amenable number.

2151305113 is a deficient number, since it is larger than the sum of its proper divisors (243995).

2151305113 is an equidigital number, since it uses as much as digits as its factorization.

2151305113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243994.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 2151305113 is about 46382.1637377990. The cubic root of 2151305113 is about 1290.9239845779.

Adding to 2151305113 its reverse (3115031512), we get a palindrome (5266336625).

The spelling of 2151305113 in words is "two billion, one hundred fifty-one million, three hundred five thousand, one hundred thirteen".