1131023312103 has 4 divisors (see below), whose sum is σ = 1508031082808. Its totient is φ = 754015541400.

The previous prime is 1131023312059. The next prime is 1131023312131. The reversal of 1131023312103 is 3012133201311.

It is a happy number.

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

It is not a de Polignac number, because 1131023312103 - 2¹² = 1131023308007 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 1131023312103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131023312603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188503885348 + ... + 188503885353.

It is an arithmetic number, because the mean of its divisors is an integer number (377007770702).

Almost surely, 2^{1131023312103} is an apocalyptic number.

1131023312103 is a deficient number, since it is larger than the sum of its proper divisors (377007770705).

1131023312103 is an equidigital number, since it uses as much as digits as its factorization.

1131023312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377007770704.

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

Adding to 1131023312103 its reverse (3012133201311), we get a palindrome (4143156513414).

The spelling of 1131023312103 in words is "one trillion, one hundred thirty-one billion, twenty-three million, three hundred twelve thousand, one hundred three".