981133273 has 2 divisors, whose sum is σ = 981133274. Its totient is φ = 981133272.

The previous prime is 981133259. The next prime is 981133339. The reversal of 981133273 is 372331189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521802649 + 459330624 = 22843^2 + 21432^2 .

It is a cyclic number.

It is not a de Polignac number, because 981133273 - 2²⁹ = 444262361 is a prime.

It is a super-3 number, since 3×981133273³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (981133253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490566636 + 490566637.

It is an arithmetic number, because the mean of its divisors is an integer number (490566637).

Almost surely, 2^981133273 is an apocalyptic number.

It is an amenable number.

981133273 is a deficient number, since it is larger than the sum of its proper divisors (1).

981133273 is an equidigital number, since it uses as much as digits as its factorization.

981133273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 981133273 is about 31323.0469941862. The cubic root of 981133273 is about 993.6711207884.

The spelling of 981133273 in words is "nine hundred eighty-one million, one hundred thirty-three thousand, two hundred seventy-three".