320311131242140 has 48 divisors (see below), whose sum is σ = 678335427463680. Its totient is φ = 127046443230720.

The previous prime is 320311131242093. The next prime is 320311131242149. The reversal of 320311131242140 is 41242131113023.

It is a junction number, because it is equal to n+sod(n) for n = 320311131242099 and 320311131242108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320311131242149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132751755 + ... + 135143074.

It is an arithmetic number, because the mean of its divisors is an integer number (14131988072160).

Almost surely, 2^{320311131242140} is an apocalyptic number.

It is an amenable number.

320311131242140 is an abundant number, since it is smaller than the sum of its proper divisors (358024296221540).

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

320311131242140 is a wasteful number, since it uses less digits than its factorization.

320311131242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267895342 (or 267895340 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 320311131242140 its reverse (41242131113023), we get a palindrome (361553262355163).

The spelling of 320311131242140 in words is "three hundred twenty trillion, three hundred eleven billion, one hundred thirty-one million, two hundred forty-two thousand, one hundred forty".