321032013320 has 16 divisors (see below), whose sum is σ = 722322030060. Its totient is φ = 128412805312.

The previous prime is 321032013319. The next prime is 321032013331. The reversal of 321032013320 is 23310230123.

It can be written as a sum of positive squares in 2 ways, for example, as 306625772644 + 14406240676 = 553738^2 + 120026^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 321032013292 and 321032013301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4012900127 + ... + 4012900206.

Almost surely, 2^321032013320 is an apocalyptic number.

It is an amenable number.

321032013320 is an abundant number, since it is smaller than the sum of its proper divisors (401290016740).

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

321032013320 is a wasteful number, since it uses less digits than its factorization.

321032013320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8025800344 (or 8025800340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 321032013320 its reverse (23310230123), we get a palindrome (344342243443).

The spelling of 321032013320 in words is "three hundred twenty-one billion, thirty-two million, thirteen thousand, three hundred twenty".