31430330303140 has 24 divisors (see below), whose sum is σ = 66657195558072. Its totient is φ = 12447655564800.

The previous prime is 31430330303123. The next prime is 31430330303149. The reversal of 31430330303140 is 4130303303413.

It can be written as a sum of positive squares in 4 ways, for example, as 19839737289124 + 11590593014016 = 4454182^2 + 3404496^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31430330303099 and 31430330303108.

It is not an unprimeable number, because it can be changed into a prime (31430330303149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7779782709 + ... + 7779786748.

It is an arithmetic number, because the mean of its divisors is an integer number (2777383148253).

Almost surely, 2^{31430330303140} is an apocalyptic number.

It is an amenable number.

31430330303140 is an abundant number, since it is smaller than the sum of its proper divisors (35226865254932).

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

31430330303140 is a wasteful number, since it uses less digits than its factorization.

31430330303140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15559569567 (or 15559569565 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31430330303140 its reverse (4130303303413), we get a palindrome (35560633606553).

The spelling of 31430330303140 in words is "thirty-one trillion, four hundred thirty billion, three hundred thirty million, three hundred three thousand, one hundred forty".