1131230232213 has 4 divisors (see below), whose sum is σ = 1508306976288. Its totient is φ = 754153488140.

The previous prime is 1131230232173. The next prime is 1131230232233. The reversal of 1131230232213 is 3122320321311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131230232213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131230232233) 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, 188538372033 + ... + 188538372038.

It is an arithmetic number, because the mean of its divisors is an integer number (377076744072).

Almost surely, 2^{1131230232213} is an apocalyptic number.

It is an amenable number.

1131230232213 is a deficient number, since it is larger than the sum of its proper divisors (377076744075).

1131230232213 is an equidigital number, since it uses as much as digits as its factorization.

1131230232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377076744074.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1131230232213 its reverse (3122320321311), we get a palindrome (4253550553524).

The spelling of 1131230232213 in words is "one trillion, one hundred thirty-one billion, two hundred thirty million, two hundred thirty-two thousand, two hundred thirteen".