31320321223331 has 8 divisors (see below), whose sum is σ = 35806923900000. Its totient is φ = 26836786315008.

The previous prime is 31320321223277. The next prime is 31320321223351. The reversal of 31320321223331 is 13332212302313.

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 31320321223331 - 2³⁸ = 31045443316387 is a prime.

It is a super-2 number, since 2×31320321223331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320321223294 and 31320321223303.

It is not an unprimeable number, because it can be changed into a prime (31320321223351) 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, 766920206 + ... + 766961043.

It is an arithmetic number, because the mean of its divisors is an integer number (4475865487500).

Almost surely, 2^{31320321223331} is an apocalyptic number.

31320321223331 is a deficient number, since it is larger than the sum of its proper divisors (4486602676669).

31320321223331 is a wasteful number, since it uses less digits than its factorization.

31320321223331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533884173.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31320321223331 its reverse (13332212302313), we get a palindrome (44652533525644).

The spelling of 31320321223331 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty-one million, two hundred twenty-three thousand, three hundred thirty-one".