320031097 has 2 divisors, whose sum is σ = 320031098. Its totient is φ = 320031096.

The previous prime is 320031083. The next prime is 320031169. The reversal of 320031097 is 790130023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225630441 + 94400656 = 15021^2 + 9716^2 .

It is a cyclic number.

It is not a de Polignac number, because 320031097 - 2⁷ = 320030969 is a prime.

It is not a weakly prime, because it can be changed into another prime (320031067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160015548 + 160015549.

It is an arithmetic number, because the mean of its divisors is an integer number (160015549).

Almost surely, 2^320031097 is an apocalyptic number.

It is an amenable number.

320031097 is a deficient number, since it is larger than the sum of its proper divisors (1).

320031097 is an equidigital number, since it uses as much as digits as its factorization.

320031097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 320031097 is about 17889.4129864565. The cubic root of 320031097 is about 684.0125342539.

The spelling of 320031097 in words is "three hundred twenty million, thirty-one thousand, ninety-seven".