31323221303 has 8 divisors (see below), whose sum is σ = 34173325200. Its totient is φ = 28473540480.

The previous prime is 31323221297. The next prime is 31323221311. The reversal of 31323221303 is 30312232313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31323221303 - 2¹⁸ = 31322959159 is a prime.

It is a super-2 number, since 2×31323221303² (a number of 22 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 (31323221333) 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, 60401 + ... + 257477.

It is an arithmetic number, because the mean of its divisors is an integer number (4271665650).

Almost surely, 2^31323221303 is an apocalyptic number.

31323221303 is a deficient number, since it is larger than the sum of its proper divisors (2850103897).

31323221303 is a wasteful number, since it uses less digits than its factorization.

31323221303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211537.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31323221303 its reverse (30312232313), we get a palindrome (61635453616).

The spelling of 31323221303 in words is "thirty-one billion, three hundred twenty-three million, two hundred twenty-one thousand, three hundred three".