1131430508545 has 4 divisors (see below), whose sum is σ = 1357716610260. Its totient is φ = 905144406832.

The previous prime is 1131430508531. The next prime is 1131430508573. The reversal of 1131430508545 is 5458050341311.

It is a happy number.

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 637086523329 + 494343985216 = 798177^2 + 703096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131430508545 - 2²⁵ = 1131396954113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131430508498 and 1131430508507.

It is an unprimeable number.

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, 113143050850 + ... + 113143050859.

It is an arithmetic number, because the mean of its divisors is an integer number (339429152565).

Almost surely, 2^{1131430508545} is an apocalyptic number.

It is an amenable number.

1131430508545 is a deficient number, since it is larger than the sum of its proper divisors (226286101715).

1131430508545 is an equidigital number, since it uses as much as digits as its factorization.

1131430508545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226286101714.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 1131430508545 its reverse (5458050341311), we get a palindrome (6589480849856).

The spelling of 1131430508545 in words is "one trillion, one hundred thirty-one billion, four hundred thirty million, five hundred eight thousand, five hundred forty-five".