31320313232203 has 16 divisors (see below), whose sum is σ = 33033506469120. Its totient is φ = 29613601485216.

The previous prime is 31320313232171. The next prime is 31320313232231. The reversal of 31320313232203 is 30223231302313.

It is a cyclic number.

It is not a de Polignac number, because 31320313232203 - 2⁵ = 31320313232171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320313235203) 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, 220997601 + ... + 221139277.

It is an arithmetic number, because the mean of its divisors is an integer number (2064594154320).

Almost surely, 2^{31320313232203} is an apocalyptic number.

31320313232203 is a deficient number, since it is larger than the sum of its proper divisors (1713193236917).

31320313232203 is a wasteful number, since it uses less digits than its factorization.

31320313232203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164466.

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

Adding to 31320313232203 its reverse (30223231302313), we get a palindrome (61543544534516).

The spelling of 31320313232203 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirteen million, two hundred thirty-two thousand, two hundred three".