7247731 has 2 divisors, whose sum is σ = 7247732. Its totient is φ = 7247730.

The previous prime is 7247719. The next prime is 7247741. The reversal of 7247731 is 1377427.

It is a strong prime.

It is an emirp because it is prime and its reverse (1377427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7247731 - 2⁵ = 7247699 is a prime.

It is a super-2 number, since 2×7247731² = 105059209296722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7247693 and 7247702.

It is not a weakly prime, because it can be changed into another prime (7247701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623865 + 3623866.

It is an arithmetic number, because the mean of its divisors is an integer number (3623866).

Almost surely, 2^7247731 is an apocalyptic number.

7247731 is a deficient number, since it is larger than the sum of its proper divisors (1).

7247731 is an equidigital number, since it uses as much as digits as its factorization.

7247731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8232, while the sum is 31.

The square root of 7247731 is about 2692.1610278733. The cubic root of 7247731 is about 193.5236390762.

The spelling of 7247731 in words is "seven million, two hundred forty-seven thousand, seven hundred thirty-one".