1131404445011 has 16 divisors (see below), whose sum is σ = 1229429913600. Its totient is φ = 1037230142400.

The previous prime is 1131404444993. The next prime is 1131404445079. The reversal of 1131404445011 is 1105444041311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1131404445011 - 2³⁸ = 856526538067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131404445091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17737706 + ... + 17801376.

It is an arithmetic number, because the mean of its divisors is an integer number (76839369600).

Almost surely, 2^{1131404445011} is an apocalyptic number.

1131404445011 is a deficient number, since it is larger than the sum of its proper divisors (98025468589).

1131404445011 is a wasteful number, since it uses less digits than its factorization.

1131404445011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93890.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 1131404445011 its reverse (1105444041311), we get a palindrome (2236848486322).

The spelling of 1131404445011 in words is "one trillion, one hundred thirty-one billion, four hundred four million, four hundred forty-five thousand, eleven".