213254077 has 2 divisors, whose sum is σ = 213254078. Its totient is φ = 213254076.

The previous prime is 213254047. The next prime is 213254123. The reversal of 213254077 is 770452312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212751396 + 502681 = 14586^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 213254077 - 2²³ = 204865469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213254047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106627038 + 106627039.

It is an arithmetic number, because the mean of its divisors is an integer number (106627039).

Almost surely, 2^213254077 is an apocalyptic number.

It is an amenable number.

213254077 is a deficient number, since it is larger than the sum of its proper divisors (1).

213254077 is an equidigital number, since it uses as much as digits as its factorization.

213254077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 213254077 is about 14603.2214596643. The cubic root of 213254077 is about 597.4466279363.

The spelling of 213254077 in words is "two hundred thirteen million, two hundred fifty-four thousand, seventy-seven".