731307361 has 2 divisors, whose sum is σ = 731307362. Its totient is φ = 731307360.

The previous prime is 731307349. The next prime is 731307373. The reversal of 731307361 is 163703137.

It is a balanced prime because it is at equal distance from previous prime (731307349) and next prime (731307373).

It can be written as a sum of positive squares in only one way, i.e., 729000000 + 2307361 = 27000^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 731307361 - 2²³ = 722918753 is a prime.

It is a super-3 number, since 3×731307361³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (731307061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365653680 + 365653681.

It is an arithmetic number, because the mean of its divisors is an integer number (365653681).

Almost surely, 2^731307361 is an apocalyptic number.

It is an amenable number.

731307361 is a deficient number, since it is larger than the sum of its proper divisors (1).

731307361 is an equidigital number, since it uses as much as digits as its factorization.

731307361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 731307361 is about 27042.6951504468. The cubic root of 731307361 is about 900.9485312451.

The spelling of 731307361 in words is "seven hundred thirty-one million, three hundred seven thousand, three hundred sixty-one".