31320131300 has 18 divisors (see below), whose sum is σ = 67964685138. Its totient is φ = 12528052480.

The previous prime is 31320131299. The next prime is 31320131317. The reversal of 31320131300 is 313102313.

It can be written as a sum of positive squares in 3 ways, for example, as 13075456 + 31307055844 = 3616^2 + 176938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156600557 + ... + 156600756.

It is an arithmetic number, because the mean of its divisors is an integer number (3775815841).

Almost surely, 2^31320131300 is an apocalyptic number.

It is an amenable number.

31320131300 is an abundant number, since it is smaller than the sum of its proper divisors (36644553838).

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

31320131300 is a wasteful number, since it uses less digits than its factorization.

31320131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313201327 (or 313201320 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31320131300 its reverse (313102313), we get a palindrome (31633233613).

It can be divided in two parts, 3132013 and 1300, that added together give a palindrome (3133313).

The spelling of 31320131300 in words is "thirty-one billion, three hundred twenty million, one hundred thirty-one thousand, three hundred".