31323221320303 has 16 divisors (see below), whose sum is σ = 34238451985920. Its totient is φ = 28419294974400.

The previous prime is 31323221320201. The next prime is 31323221320361. The reversal of 31323221320303 is 30302312232313.

It is not a de Polignac number, because 31323221320303 - 2¹³ = 31323221312111 is a prime.

It is a super-2 number, since 2×31323221320303² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323221320403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22777363 + ... + 24113371.

It is an arithmetic number, because the mean of its divisors is an integer number (2139903249120).

Almost surely, 2^{31323221320303} is an apocalyptic number.

31323221320303 is a deficient number, since it is larger than the sum of its proper divisors (2915230665617).

31323221320303 is a wasteful number, since it uses less digits than its factorization.

31323221320303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340238.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31323221320303 its reverse (30302312232313), we get a palindrome (61625533552616).

The spelling of 31323221320303 in words is "thirty-one trillion, three hundred twenty-three billion, two hundred twenty-one million, three hundred twenty thousand, three hundred three".