1131231232103 has 4 divisors (see below), whose sum is σ = 1292835693840. Its totient is φ = 969626770368.

The previous prime is 1131231232097. The next prime is 1131231232181. The reversal of 1131231232103 is 3012321321311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131231232103 - 2⁶ = 1131231232039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131231232003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80802230858 + ... + 80802230871.

It is an arithmetic number, because the mean of its divisors is an integer number (323208923460).

Almost surely, 2^{1131231232103} is an apocalyptic number.

1131231232103 is a deficient number, since it is larger than the sum of its proper divisors (161604461737).

1131231232103 is an equidigital number, since it uses as much as digits as its factorization.

1131231232103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161604461736.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1131231232103 its reverse (3012321321311), we get a palindrome (4143552553414).

The spelling of 1131231232103 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred three".