31323101100321 has 32 divisors (see below), whose sum is σ = 42513073739136. Its totient is φ = 20508658560000.

The previous prime is 31323101100167. The next prime is 31323101100377. The reversal of 31323101100321 is 12300110132313.

It is a happy number.

It is not a de Polignac number, because 31323101100321 - 2¹⁷ = 31323100969249 is a prime.

It is a super-2 number, since 2×31323101100321² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31323101140321) 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 31 ways as a sum of consecutive naturals, for example, 323982630 + ... + 324079296.

It is an arithmetic number, because the mean of its divisors is an integer number (1328533554348).

Almost surely, 2^{31323101100321} is an apocalyptic number.

It is an amenable number.

31323101100321 is a deficient number, since it is larger than the sum of its proper divisors (11189972638815).

31323101100321 is a wasteful number, since it uses less digits than its factorization.

31323101100321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99393.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31323101100321 its reverse (12300110132313), we get a palindrome (43623211232634).

The spelling of 31323101100321 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred one million, one hundred thousand, three hundred twenty-one".