320135311420 has 24 divisors (see below), whose sum is σ = 672301564704. Its totient is φ = 128050808256.

The previous prime is 320135311417. The next prime is 320135311427. The reversal of 320135311420 is 24113531023.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 676137 + ... + 1047583.

It is an arithmetic number, because the mean of its divisors is an integer number (28012565196).

Almost surely, 2^320135311420 is an apocalyptic number.

It is an amenable number.

320135311420 is an abundant number, since it is smaller than the sum of its proper divisors (352166253284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320135311420 is a wasteful number, since it uses less digits than its factorization.

320135311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414549 (or 414547 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 320135311420 its reverse (24113531023), we get a palindrome (344248842443).

The spelling of 320135311420 in words is "three hundred twenty billion, one hundred thirty-five million, three hundred eleven thousand, four hundred twenty".