31320331605242 has 16 divisors (see below), whose sum is σ = 49084637357952. Its totient is φ = 14960494420080.

The previous prime is 31320331605217. The next prime is 31320331605247. The reversal of 31320331605242 is 24250613302313.

It is not an unprimeable number, because it can be changed into a prime (31320331605247) 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, 427113134 + ... + 427186457.

It is an arithmetic number, because the mean of its divisors is an integer number (3067789834872).

Almost surely, 2^{31320331605242} is an apocalyptic number.

31320331605242 is a deficient number, since it is larger than the sum of its proper divisors (17764305752710).

31320331605242 is a wasteful number, since it uses less digits than its factorization.

31320331605242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854300413.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 31320331605242 its reverse (24250613302313), we get a palindrome (55570944907555).

The spelling of 31320331605242 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirty-one million, six hundred five thousand, two hundred forty-two".