215314513 has 2 divisors, whose sum is σ = 215314514. Its totient is φ = 215314512.

The previous prime is 215314511. The next prime is 215314549. The reversal of 215314513 is 315413512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202123089 + 13191424 = 14217^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 215314513 - 2¹ = 215314511 is a prime.

Together with 215314511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (215314511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107657256 + 107657257.

It is an arithmetic number, because the mean of its divisors is an integer number (107657257).

Almost surely, 2^215314513 is an apocalyptic number.

It is an amenable number.

215314513 is a deficient number, since it is larger than the sum of its proper divisors (1).

215314513 is an equidigital number, since it uses as much as digits as its factorization.

215314513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 215314513 is about 14673.5991835677. The cubic root of 215314513 is about 599.3646172002.

The spelling of 215314513 in words is "two hundred fifteen million, three hundred fourteen thousand, five hundred thirteen".