731313849 has 16 divisors (see below), whose sum is σ = 1115292672. Its totient is φ = 417552528.

The previous prime is 731313833. The next prime is 731313853. The reversal of 731313849 is 948313137.

It is a happy number.

It is not a de Polignac number, because 731313849 - 2⁴ = 731313833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (731313829) 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 in 15 ways as a sum of consecutive naturals, for example, 13372 + ... + 40514.

It is an arithmetic number, because the mean of its divisors is an integer number (69705792).

Almost surely, 2^731313849 is an apocalyptic number.

It is an amenable number.

731313849 is a deficient number, since it is larger than the sum of its proper divisors (383978823).

731313849 is a wasteful number, since it uses less digits than its factorization.

731313849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28436.

The product of its digits is 54432, while the sum is 39.

The square root of 731313849 is about 27042.8151086384. The cubic root of 731313849 is about 900.9511955770.

The spelling of 731313849 in words is "seven hundred thirty-one million, three hundred thirteen thousand, eight hundred forty-nine".