213248117 has 2 divisors, whose sum is σ = 213248118. Its totient is φ = 213248116.

The previous prime is 213248099. The next prime is 213248179. The reversal of 213248117 is 711842312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 60824401 = 12346^2 + 7799^2 .

It is a cyclic number.

It is not a de Polignac number, because 213248117 - 2¹⁰ = 213247093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213248117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213248417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106624058 + 106624059.

It is an arithmetic number, because the mean of its divisors is an integer number (106624059).

Almost surely, 2^213248117 is an apocalyptic number.

It is an amenable number.

213248117 is a deficient number, since it is larger than the sum of its proper divisors (1).

213248117 is an equidigital number, since it uses as much as digits as its factorization.

213248117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 213248117 is about 14603.0173936759. The cubic root of 213248117 is about 597.4410620950.

The spelling of 213248117 in words is "two hundred thirteen million, two hundred forty-eight thousand, one hundred seventeen".