320747353 has 2 divisors, whose sum is σ = 320747354. Its totient is φ = 320747352.

The previous prime is 320747299. The next prime is 320747369. The reversal of 320747353 is 353747023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310711129 + 10036224 = 17627^2 + 3168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320747353 is a prime.

It is not a weakly prime, because it can be changed into another prime (320747753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160373676 + 160373677.

It is an arithmetic number, because the mean of its divisors is an integer number (160373677).

Almost surely, 2^320747353 is an apocalyptic number.

It is an amenable number.

320747353 is a deficient number, since it is larger than the sum of its proper divisors (1).

320747353 is an equidigital number, since it uses as much as digits as its factorization.

320747353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 34.

The square root of 320747353 is about 17909.4207890708. The cubic root of 320747353 is about 684.5224461971.

The spelling of 320747353 in words is "three hundred twenty million, seven hundred forty-seven thousand, three hundred fifty-three".