215250313 has 2 divisors, whose sum is σ = 215250314. Its totient is φ = 215250312.

The previous prime is 215250263. The next prime is 215250319. The reversal of 215250313 is 313052512.

215250313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155451024 + 59799289 = 12468^2 + 7733^2 .

It is a cyclic number.

It is not a de Polignac number, because 215250313 - 2¹³ = 215242121 is a prime.

It is not a weakly prime, because it can be changed into another prime (215250319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107625156 + 107625157.

It is an arithmetic number, because the mean of its divisors is an integer number (107625157).

Almost surely, 2^215250313 is an apocalyptic number.

It is an amenable number.

215250313 is a deficient number, since it is larger than the sum of its proper divisors (1).

215250313 is an equidigital number, since it uses as much as digits as its factorization.

215250313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 215250313 is about 14671.4114181288. The cubic root of 215250313 is about 599.3050407338.

The spelling of 215250313 in words is "two hundred fifteen million, two hundred fifty thousand, three hundred thirteen".