7312328731 has 2 divisors, whose sum is σ = 7312328732. Its totient is φ = 7312328730.

The previous prime is 7312328719. The next prime is 7312328753. The reversal of 7312328731 is 1378232137.

7312328731 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1378232137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7312328731 - 2⁷ = 7312328603 is a prime.

It is a super-2 number, since 2×7312328731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7312320731) 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, 3656164365 + 3656164366.

It is an arithmetic number, because the mean of its divisors is an integer number (3656164366).

Almost surely, 2^7312328731 is an apocalyptic number.

7312328731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7312328731 is an equidigital number, since it uses as much as digits as its factorization.

7312328731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 37.

The square root of 7312328731 is about 85512.1554575722. The cubic root of 7312328731 is about 1940.9688655236.

The spelling of 7312328731 in words is "seven billion, three hundred twelve million, three hundred twenty-eight thousand, seven hundred thirty-one".