213119993 has 2 divisors, whose sum is σ = 213119994. Its totient is φ = 213119992.

The previous prime is 213119989. The next prime is 213120029. The reversal of 213119993 is 399911312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212809744 + 310249 = 14588^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 213119993 - 2² = 213119989 is a prime.

It is not a weakly prime, because it can be changed into another prime (213110993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106559996 + 106559997.

It is an arithmetic number, because the mean of its divisors is an integer number (106559997).

Almost surely, 2^213119993 is an apocalyptic number.

It is an amenable number.

213119993 is a deficient number, since it is larger than the sum of its proper divisors (1).

213119993 is an equidigital number, since it uses as much as digits as its factorization.

213119993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 38.

The square root of 213119993 is about 14598.6298329672. The cubic root of 213119993 is about 597.3213863622.

The spelling of 213119993 in words is "two hundred thirteen million, one hundred nineteen thousand, nine hundred ninety-three".