31323323203 has 4 divisors (see below), whose sum is σ = 31323738960. Its totient is φ = 31322907448.

The previous prime is 31323323189. The next prime is 31323323209. The reversal of 31323323203 is 30232332313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31323323203 - 2⁹ = 31323322691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323323209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59623 + ... + 257296.

It is an arithmetic number, because the mean of its divisors is an integer number (7830934740).

Almost surely, 2^31323323203 is an apocalyptic number.

31323323203 is a deficient number, since it is larger than the sum of its proper divisors (415757).

31323323203 is an equidigital number, since it uses as much as digits as its factorization.

31323323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415756.

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 31323323203 its reverse (30232332313), we get a palindrome (61555655516).

The spelling of 31323323203 in words is "thirty-one billion, three hundred twenty-three million, three hundred twenty-three thousand, two hundred three".