2151513113 has 2 divisors, whose sum is σ = 2151513114. Its totient is φ = 2151513112.

The previous prime is 2151513109. The next prime is 2151513167. The reversal of 2151513113 is 3113151512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1836379609 + 315133504 = 42853^2 + 17752^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151513113 - 2² = 2151513109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2151513193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075756556 + 1075756557.

It is an arithmetic number, because the mean of its divisors is an integer number (1075756557).

Almost surely, 2^2151513113 is an apocalyptic number.

It is an amenable number.

2151513113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151513113 is an equidigital number, since it uses as much as digits as its factorization.

2151513113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 23.

The square root of 2151513113 is about 46384.4059248364. The cubic root of 2151513113 is about 1290.9655877787.

Adding to 2151513113 its reverse (3113151512), we get a palindrome (5264664625).

The spelling of 2151513113 in words is "two billion, one hundred fifty-one million, five hundred thirteen thousand, one hundred thirteen".