323311320040 has 16 divisors (see below), whose sum is σ = 727450470180. Its totient is φ = 129324528000.

The previous prime is 323311319987. The next prime is 323311320049. The reversal of 323311320040 is 40023113323.

It can be written as a sum of positive squares in 2 ways, for example, as 315311448676 + 7999871364 = 561526^2 + 89442^2 .

It is a junction number, because it is equal to n+sod(n) for n = 323311319993 and 323311320020.

It is not an unprimeable number, because it can be changed into a prime (323311320049) 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, 4041391461 + ... + 4041391540.

Almost surely, 2^323311320040 is an apocalyptic number.

It is an amenable number.

323311320040 is an abundant number, since it is smaller than the sum of its proper divisors (404139150140).

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

323311320040 is a wasteful number, since it uses less digits than its factorization.

323311320040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082783012 (or 8082783008 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 323311320040 its reverse (40023113323), we get a palindrome (363334433363).

The spelling of 323311320040 in words is "three hundred twenty-three billion, three hundred eleven million, three hundred twenty thousand, forty".