1131243100133 has 4 divisors (see below), whose sum is σ = 1131248771340. Its totient is φ = 1131237428928.

The previous prime is 1131243100123. The next prime is 1131243100151. The reversal of 1131243100133 is 3310013421311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 585627459169 + 545615640964 = 765263^2 + 738658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131243100133 - 2²⁰ = 1131242051557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131243100099 and 1131243100108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131243100123) 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, 2525060 + ... + 2939117.

It is an arithmetic number, because the mean of its divisors is an integer number (282812192835).

Almost surely, 2^{1131243100133} is an apocalyptic number.

It is an amenable number.

1131243100133 is a deficient number, since it is larger than the sum of its proper divisors (5671207).

1131243100133 is an equidigital number, since it uses as much as digits as its factorization.

1131243100133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671206.

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

Adding to 1131243100133 its reverse (3310013421311), we get a palindrome (4441256521444).

The spelling of 1131243100133 in words is "one trillion, one hundred thirty-one billion, two hundred forty-three million, one hundred thousand, one hundred thirty-three".