320131307 has 2 divisors, whose sum is σ = 320131308. Its totient is φ = 320131306.

The previous prime is 320131277. The next prime is 320131333. The reversal of 320131307 is 703131023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320131307 - 2¹² = 320127211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320131387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160065653 + 160065654.

It is an arithmetic number, because the mean of its divisors is an integer number (160065654).

Almost surely, 2^320131307 is an apocalyptic number.

320131307 is a deficient number, since it is larger than the sum of its proper divisors (1).

320131307 is an equidigital number, since it uses as much as digits as its factorization.

320131307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 320131307 is about 17892.2135858032. The cubic root of 320131307 is about 684.0839207988.

The spelling of 320131307 in words is "three hundred twenty million, one hundred thirty-one thousand, three hundred seven".