31231202321113 has 8 divisors (see below), whose sum is σ = 31250070006120. Its totient is φ = 31212335185920.

The previous prime is 31231202321107. The next prime is 31231202321141. The reversal of 31231202321113 is 31112320213213.

It can be written as a sum of positive squares in 4 ways, for example, as 347430082624 + 30883772238489 = 589432^2 + 5557317^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31231202321113 - 2⁹ = 31231202320601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31231202321413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204529273 + ... + 204681913.

It is an arithmetic number, because the mean of its divisors is an integer number (3906258750765).

Almost surely, 2^{31231202321113} is an apocalyptic number.

It is an amenable number.

31231202321113 is a deficient number, since it is larger than the sum of its proper divisors (18867685007).

31231202321113 is a wasteful number, since it uses less digits than its factorization.

31231202321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274907.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31231202321113 its reverse (31112320213213), we get a palindrome (62343522534326).

The spelling of 31231202321113 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred two million, three hundred twenty-one thousand, one hundred thirteen".