323120140 has 24 divisors (see below), whose sum is σ = 775488672. Its totient is φ = 110784000.

The previous prime is 323120129. The next prime is 323120143. The reversal of 323120140 is 41021323.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (323120143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153861 + ... + 1154140.

It is an arithmetic number, because the mean of its divisors is an integer number (32312028).

Almost surely, 2^323120140 is an apocalyptic number.

It is an amenable number.

323120140 is an abundant number, since it is smaller than the sum of its proper divisors (452368532).

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

323120140 is a wasteful number, since it uses less digits than its factorization.

323120140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308017 (or 2308015 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 323120140 is about 17975.5428290775. The cubic root of 323120140 is about 686.2062607394.

Adding to 323120140 its reverse (41021323), we get a palindrome (364141463).

The spelling of 323120140 in words is "three hundred twenty-three million, one hundred twenty thousand, one hundred forty".