320342031313 has 2 divisors, whose sum is σ = 320342031314. Its totient is φ = 320342031312.

The previous prime is 320342031293. The next prime is 320342031353. The reversal of 320342031313 is 313130243023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314953296849 + 5388734464 = 561207^2 + 73408^2 .

It is a cyclic number.

It is not a de Polignac number, because 320342031313 - 2¹³ = 320342023121 is a prime.

It is not a weakly prime, because it can be changed into another prime (320342031353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160171015656 + 160171015657.

It is an arithmetic number, because the mean of its divisors is an integer number (160171015657).

Almost surely, 2^320342031313 is an apocalyptic number.

It is an amenable number.

320342031313 is a deficient number, since it is larger than the sum of its proper divisors (1).

320342031313 is an equidigital number, since it uses as much as digits as its factorization.

320342031313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 320342031313 its reverse (313130243023), we get a palindrome (633472274336).

The spelling of 320342031313 in words is "three hundred twenty billion, three hundred forty-two million, thirty-one thousand, three hundred thirteen".