213995707 has 2 divisors, whose sum is σ = 213995708. Its totient is φ = 213995706.

The previous prime is 213995693. The next prime is 213995713. The reversal of 213995707 is 707599312.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213995707 is a prime.

It is a super-2 number, since 2×213995707² = 91588325228859698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213995767) 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, 106997853 + 106997854.

It is an arithmetic number, because the mean of its divisors is an integer number (106997854).

Almost surely, 2^213995707 is an apocalyptic number.

213995707 is a deficient number, since it is larger than the sum of its proper divisors (1).

213995707 is an equidigital number, since it uses as much as digits as its factorization.

213995707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 213995707 is about 14628.5921058727. The cubic root of 213995707 is about 598.1384032174.

The spelling of 213995707 in words is "two hundred thirteen million, nine hundred ninety-five thousand, seven hundred seven".