320135311423 has 4 divisors (see below), whose sum is σ = 336984538360. Its totient is φ = 303286084488.

The previous prime is 320135311417. The next prime is 320135311427. The reversal of 320135311423 is 324113531023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320135311423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320135311391 and 320135311400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320135311427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8424613440 + ... + 8424613477.

It is an arithmetic number, because the mean of its divisors is an integer number (84246134590).

Almost surely, 2^320135311423 is an apocalyptic number.

320135311423 is a deficient number, since it is larger than the sum of its proper divisors (16849226937).

320135311423 is a wasteful number, since it uses less digits than its factorization.

320135311423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849226936.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 320135311423 its reverse (324113531023), we get a palindrome (644248842446).

The spelling of 320135311423 in words is "three hundred twenty billion, one hundred thirty-five million, three hundred eleven thousand, four hundred twenty-three".