320345020134 has 48 divisors (see below), whose sum is σ = 713281789584. Its totient is φ = 103844332800.

The previous prime is 320345020133. The next prime is 320345020153. The reversal of 320345020134 is 431020543023.

320345020134 is a `hidden beast` number, since 3 + 2 + 0 + 3 + 450 + 201 + 3 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 320345020098 and 320345020107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320345020133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 462412 + ... + 924399.

It is an arithmetic number, because the mean of its divisors is an integer number (14860037283).

Almost surely, 2^320345020134 is an apocalyptic number.

320345020134 is an abundant number, since it is smaller than the sum of its proper divisors (392936769450).

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

320345020134 is a wasteful number, since it uses less digits than its factorization.

320345020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387173 (or 1387170 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 320345020134 its reverse (431020543023), we get a palindrome (751365563157).

The spelling of 320345020134 in words is "three hundred twenty billion, three hundred forty-five million, twenty thousand, one hundred thirty-four".