213886093 has 2 divisors, whose sum is σ = 213886094. Its totient is φ = 213886092.

The previous prime is 213886063. The next prime is 213886109. The reversal of 213886093 is 390688312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154703844 + 59182249 = 12438^2 + 7693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213886093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213886003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106943046 + 106943047.

It is an arithmetic number, because the mean of its divisors is an integer number (106943047).

Almost surely, 2^213886093 is an apocalyptic number.

It is an amenable number.

213886093 is a deficient number, since it is larger than the sum of its proper divisors (1).

213886093 is an equidigital number, since it uses as much as digits as its factorization.

213886093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 213886093 is about 14624.8450590083. The cubic root of 213886093 is about 598.0362585816.

The spelling of 213886093 in words is "two hundred thirteen million, eight hundred eighty-six thousand, ninety-three".