1131340511201 has 4 divisors (see below), whose sum is σ = 1161917281812. Its totient is φ = 1100763740592.

The previous prime is 1131340511179. The next prime is 1131340511239. The reversal of 1131340511201 is 1021150431311.

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 1100285613025 + 31054898176 = 1048945^2 + 176224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131340511201 - 2⁶ = 1131340511137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131340511261) 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, 15288385250 + ... + 15288385323.

It is an arithmetic number, because the mean of its divisors is an integer number (290479320453).

Almost surely, 2^{1131340511201} is an apocalyptic number.

It is an amenable number.

1131340511201 is a deficient number, since it is larger than the sum of its proper divisors (30576770611).

1131340511201 is an equidigital number, since it uses as much as digits as its factorization.

1131340511201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30576770610.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 1131340511201 its reverse (1021150431311), we get a palindrome (2152490942512).

The spelling of 1131340511201 in words is "one trillion, one hundred thirty-one billion, three hundred forty million, five hundred eleven thousand, two hundred one".