31321313203 has 8 divisors (see below), whose sum is σ = 31498131456. Its totient is φ = 31144629000.

The previous prime is 31321313183. The next prime is 31321313209. The reversal of 31321313203 is 30231312313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31321313203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31321313209) 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, 455100 + ... + 519382.

It is an arithmetic number, because the mean of its divisors is an integer number (3937266432).

Almost surely, 2^31321313203 is an apocalyptic number.

31321313203 is a deficient number, since it is larger than the sum of its proper divisors (176818253).

31321313203 is a wasteful number, since it uses less digits than its factorization.

31321313203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67025.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31321313203 its reverse (30231312313), we get a palindrome (61552625516).

The spelling of 31321313203 in words is "thirty-one billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred three".