31321103303 has 16 divisors (see below), whose sum is σ = 36084052800. Its totient is φ = 26630764800.

The previous prime is 31321103201. The next prime is 31321103327. The reversal of 31321103303 is 30330112313.

It is a cyclic number.

It is not a de Polignac number, because 31321103303 - 2¹⁸ = 31320841159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321103393) 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 15 ways as a sum of consecutive naturals, for example, 773993 + ... + 813453.

It is an arithmetic number, because the mean of its divisors is an integer number (2255253300).

Almost surely, 2^31321103303 is an apocalyptic number.

31321103303 is a deficient number, since it is larger than the sum of its proper divisors (4762949497).

31321103303 is a wasteful number, since it uses less digits than its factorization.

31321103303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40378.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31321103303 its reverse (30330112313), we get a palindrome (61651215616).

The spelling of 31321103303 in words is "thirty-one billion, three hundred twenty-one million, one hundred three thousand, three hundred three".