320135477 has 2 divisors, whose sum is σ = 320135478. Its totient is φ = 320135476.

The previous prime is 320135467. The next prime is 320135527. The reversal of 320135477 is 774531023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275593201 + 44542276 = 16601^2 + 6674^2 .

It is a cyclic number.

It is not a de Polignac number, because 320135477 - 2¹⁰ = 320134453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320135407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160067738 + 160067739.

It is an arithmetic number, because the mean of its divisors is an integer number (160067739).

Almost surely, 2^320135477 is an apocalyptic number.

It is an amenable number.

320135477 is a deficient number, since it is larger than the sum of its proper divisors (1).

320135477 is an equidigital number, since it uses as much as digits as its factorization.

320135477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 320135477 is about 17892.3301165611. The cubic root of 320135477 is about 684.0868910567.

The spelling of 320135477 in words is "three hundred twenty million, one hundred thirty-five thousand, four hundred seventy-seven".