273311993 has 2 divisors, whose sum is σ = 273311994. Its totient is φ = 273311992.

The previous prime is 273311989. The next prime is 273312031. The reversal of 273311993 is 399113372.

It is an a-pointer prime, because the next prime (273312031) can be obtained adding 273311993 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230644969 + 42667024 = 15187^2 + 6532^2 .

It is a cyclic number.

It is not a de Polignac number, because 273311993 - 2² = 273311989 is a prime.

It is not a weakly prime, because it can be changed into another prime (273311393) 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, 136655996 + 136655997.

It is an arithmetic number, because the mean of its divisors is an integer number (136655997).

Almost surely, 2^273311993 is an apocalyptic number.

It is an amenable number.

273311993 is a deficient number, since it is larger than the sum of its proper divisors (1).

273311993 is an equidigital number, since it uses as much as digits as its factorization.

273311993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 38.

The square root of 273311993 is about 16532.1502836140. The cubic root of 273311993 is about 648.9624417270.

The spelling of 273311993 in words is "two hundred seventy-three million, three hundred eleven thousand, nine hundred ninety-three".