731369273 has 2 divisors, whose sum is σ = 731369274. Its totient is φ = 731369272.

The previous prime is 731369239. The next prime is 731369279. The reversal of 731369273 is 372963137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711182224 + 20187049 = 26668^2 + 4493^2 .

It is a cyclic number.

It is not a de Polignac number, because 731369273 - 2¹⁶ = 731303737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 731369273.

It is not a weakly prime, because it can be changed into another prime (731369279) 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, 365684636 + 365684637.

It is an arithmetic number, because the mean of its divisors is an integer number (365684637).

Almost surely, 2^731369273 is an apocalyptic number.

It is an amenable number.

731369273 is a deficient number, since it is larger than the sum of its proper divisors (1).

731369273 is an equidigital number, since it uses as much as digits as its factorization.

731369273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 41.

The square root of 731369273 is about 27043.8398346093. The cubic root of 731369273 is about 900.9739550976.

The spelling of 731369273 in words is "seven hundred thirty-one million, three hundred sixty-nine thousand, two hundred seventy-three".