213110977 has 2 divisors, whose sum is σ = 213110978. Its totient is φ = 213110976.

The previous prime is 213110971. The next prime is 213110983. The reversal of 213110977 is 779011312.

It is a balanced prime because it is at equal distance from previous prime (213110971) and next prime (213110983).

It can be written as a sum of positive squares in only one way, i.e., 107350321 + 105760656 = 10361^2 + 10284^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213110977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213110971) 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, 106555488 + 106555489.

It is an arithmetic number, because the mean of its divisors is an integer number (106555489).

Almost surely, 2^213110977 is an apocalyptic number.

It is an amenable number.

213110977 is a deficient number, since it is larger than the sum of its proper divisors (1).

213110977 is an equidigital number, since it uses as much as digits as its factorization.

213110977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 31.

The square root of 213110977 is about 14598.3210335984. The cubic root of 213110977 is about 597.3129630549.

The spelling of 213110977 in words is "two hundred thirteen million, one hundred ten thousand, nine hundred seventy-seven".