31320030310203 has 16 divisors (see below), whose sum is σ = 41829249215520. Its totient is φ = 20845426907136.

The previous prime is 31320030310139. The next prime is 31320030310213. The reversal of 31320030310203 is 30201303002313.

It is not a de Polignac number, because 31320030310203 - 2⁶ = 31320030310139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31320030310203.

It is not an unprimeable number, because it can be changed into a prime (31320030310213) 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, 9926101 + ... + 12695177.

It is an arithmetic number, because the mean of its divisors is an integer number (2614328075970).

Almost surely, 2^{31320030310203} is an apocalyptic number.

31320030310203 is a deficient number, since it is larger than the sum of its proper divisors (10509218905317).

31320030310203 is a wasteful number, since it uses less digits than its factorization.

31320030310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775326.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31320030310203 its reverse (30201303002313), we get a palindrome (61521333312516).

The spelling of 31320030310203 in words is "thirty-one trillion, three hundred twenty billion, thirty million, three hundred ten thousand, two hundred three".