213083779 has 2 divisors, whose sum is σ = 213083780. Its totient is φ = 213083778.

The previous prime is 213083749. The next prime is 213083807. The reversal of 213083779 is 977380312.

213083779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213083779 - 2⁵ = 213083747 is a prime.

It is not a weakly prime, because it can be changed into another prime (213083749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106541889 + 106541890.

It is an arithmetic number, because the mean of its divisors is an integer number (106541890).

Almost surely, 2^213083779 is an apocalyptic number.

213083779 is a deficient number, since it is larger than the sum of its proper divisors (1).

213083779 is an equidigital number, since it uses as much as digits as its factorization.

213083779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 213083779 is about 14597.3894583929. The cubic root of 213083779 is about 597.2875515543.

The spelling of 213083779 in words is "two hundred thirteen million, eighty-three thousand, seven hundred seventy-nine".