31322320010221 has 16 divisors (see below), whose sum is σ = 32074474512384. Its totient is φ = 30573748283904.

The previous prime is 31322320010197. The next prime is 31322320010231. The reversal of 31322320010221 is 12201002322313.

It is a cyclic number.

It is not a de Polignac number, because 31322320010221 - 2⁹ = 31322320009709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31322320010192 and 31322320010201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322320010231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305839795 + ... + 305942191.

It is an arithmetic number, because the mean of its divisors is an integer number (2004654657024).

Almost surely, 2^{31322320010221} is an apocalyptic number.

It is an amenable number.

31322320010221 is a deficient number, since it is larger than the sum of its proper divisors (752154502163).

31322320010221 is a wasteful number, since it uses less digits than its factorization.

31322320010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119820.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31322320010221 its reverse (12201002322313), we get a palindrome (43523322332534).

The spelling of 31322320010221 in words is "thirty-one trillion, three hundred twenty-two billion, three hundred twenty million, ten thousand, two hundred twenty-one".