213889336109 has 2 divisors, whose sum is σ = 213889336110. Its totient is φ = 213889336108.

The previous prime is 213889336057. The next prime is 213889336159. The reversal of 213889336109 is 901633988312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205471824100 + 8417512009 = 453290^2 + 91747^2 .

It is a cyclic number.

It is not a de Polignac number, because 213889336109 - 2²⁰ = 213888287533 is a prime.

It is a super-2 number, since 2×213889336109² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213889336159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106944668054 + 106944668055.

It is an arithmetic number, because the mean of its divisors is an integer number (106944668055).

Almost surely, 2^213889336109 is an apocalyptic number.

It is an amenable number.

213889336109 is a deficient number, since it is larger than the sum of its proper divisors (1).

213889336109 is an equidigital number, since it uses as much as digits as its factorization.

213889336109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 213889336109 in words is "two hundred thirteen billion, eight hundred eighty-nine million, three hundred thirty-six thousand, one hundred nine".