213011077 has 2 divisors, whose sum is σ = 213011078. Its totient is φ = 213011076.

The previous prime is 213011069. The next prime is 213011083. The reversal of 213011077 is 770110312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115218756 + 97792321 = 10734^2 + 9889^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011077 - 2³ = 213011069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213011017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505538 + 106505539.

It is an arithmetic number, because the mean of its divisors is an integer number (106505539).

Almost surely, 2^213011077 is an apocalyptic number.

It is an amenable number.

213011077 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011077 is an equidigital number, since it uses as much as digits as its factorization.

213011077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 213011077 is about 14594.8990061597. The cubic root of 213011077 is about 597.2196143650.

Adding to 213011077 its reverse (770110312), we get a palindrome (983121389).

The spelling of 213011077 in words is "two hundred thirteen million, eleven thousand, seventy-seven".