31123041103 has 16 divisors (see below), whose sum is σ = 38840414976. Its totient is φ = 24228181440.

The previous prime is 31123041097. The next prime is 31123041107. The reversal of 31123041103 is 30114032113.

It is a cyclic number.

It is not a de Polignac number, because 31123041103 - 2¹⁷ = 31122910031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123041107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116101 + ... + 275182.

It is an arithmetic number, because the mean of its divisors is an integer number (2427525936).

Almost surely, 2^31123041103 is an apocalyptic number.

31123041103 is a deficient number, since it is larger than the sum of its proper divisors (7717373873).

31123041103 is a wasteful number, since it uses less digits than its factorization.

31123041103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392334.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31123041103 its reverse (30114032113), we get a palindrome (61237073216).

The spelling of 31123041103 in words is "thirty-one billion, one hundred twenty-three million, forty-one thousand, one hundred three".