1211230031103 has 12 divisors (see below), whose sum is σ = 1852469459568. Its totient is φ = 759987470400.

The previous prime is 1211230031087. The next prime is 1211230031107. The reversal of 1211230031103 is 3011300321121.

1211230031103 is a `hidden beast` number, since 121 + 1 + 230 + 0 + 311 + 0 + 3 = 666.

It is not a de Polignac number, because 1211230031103 - 2⁴ = 1211230031087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211230031107) 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 11 ways as a sum of consecutive naturals, for example, 3958267923 + ... + 3958268228.

It is an arithmetic number, because the mean of its divisors is an integer number (154372454964).

Almost surely, 2^{1211230031103} is an apocalyptic number.

1211230031103 is a deficient number, since it is larger than the sum of its proper divisors (641239428465).

1211230031103 is a wasteful number, since it uses less digits than its factorization.

1211230031103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916536174 (or 7916536171 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211230031103 its reverse (3011300321121), we get a palindrome (4222530352224).

The spelling of 1211230031103 in words is "one trillion, two hundred eleven billion, two hundred thirty million, thirty-one thousand, one hundred three".