31113122030103 has 16 divisors (see below), whose sum is σ = 41522392941536. Its totient is φ = 20722967216640.

The previous prime is 31113122030101. The next prime is 31113122030149. The reversal of 31113122030103 is 30103022131113.

It is a happy number.

It is not a de Polignac number, because 31113122030103 - 2¹ = 31113122030101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31113122030103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113122030101) 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, 157938075 + ... + 158134947.

It is an arithmetic number, because the mean of its divisors is an integer number (2595149558846).

Almost surely, 2^{31113122030103} is an apocalyptic number.

31113122030103 is a deficient number, since it is larger than the sum of its proper divisors (10409270911433).

31113122030103 is a wasteful number, since it uses less digits than its factorization.

31113122030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245154.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31113122030103 its reverse (30103022131113), we get a palindrome (61216144161216).

It can be divided in two parts, 3111312 and 2030103, that added together give a palindrome (5141415).

The spelling of 31113122030103 in words is "thirty-one trillion, one hundred thirteen billion, one hundred twenty-two million, thirty thousand, one hundred three".