31321222233313 has 8 divisors (see below), whose sum is σ = 32106702668040. Its totient is φ = 30536767902720.

The previous prime is 31321222233293. The next prime is 31321222233341. The reversal of 31321222233313 is 31333222212313.

It can be written as a sum of positive squares in 4 ways, for example, as 2128132451344 + 29193089781969 = 1458812^2 + 5403063^2 .

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 31321222233313 - 2¹³ = 31321222225121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321222233013) 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, 256464220 + ... + 256586317.

It is an arithmetic number, because the mean of its divisors is an integer number (4013337833505).

Almost surely, 2^{31321222233313} is an apocalyptic number.

It is an amenable number.

31321222233313 is a deficient number, since it is larger than the sum of its proper divisors (785480434727).

31321222233313 is a wasteful number, since it uses less digits than its factorization.

31321222233313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513052067.

The product of its digits is 23328, while the sum is 31.

Adding to 31321222233313 its reverse (31333222212313), we get a palindrome (62654444445626).

The spelling of 31321222233313 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, three hundred thirteen".