31312333320211 has 8 divisors (see below), whose sum is σ = 32960417042880. Its totient is φ = 29664256215528.

The previous prime is 31312333320209. The next prime is 31312333320239. The reversal of 31312333320211 is 11202333321313.

It is a happy number.

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 31312333320211 - 2¹ = 31312333320209 is a prime.

It is a super-2 number, since 2×31312333320211² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31312333320211.

It is not an unprimeable number, because it can be changed into a prime (31312333320511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10255860 + ... + 12954046.

It is an arithmetic number, because the mean of its divisors is an integer number (4120052130360).

Almost surely, 2^{31312333320211} is an apocalyptic number.

31312333320211 is a deficient number, since it is larger than the sum of its proper divisors (1648083722669).

31312333320211 is a wasteful number, since it uses less digits than its factorization.

31312333320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308993.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31312333320211 its reverse (11202333321313), we get a palindrome (42514666641524).

The spelling of 31312333320211 in words is "thirty-one trillion, three hundred twelve billion, three hundred thirty-three million, three hundred twenty thousand, two hundred eleven".