1131311333111 has 16 divisors (see below), whose sum is σ = 1139738802048. Its totient is φ = 1122921676800.

The previous prime is 1131311333081. The next prime is 1131311333137. The reversal of 1131311333111 is 1113331131311.

It is a cyclic number.

It is not a de Polignac number, because 1131311333111 - 2¹⁰ = 1131311332087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131311333161) 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, 97579931 + ... + 97591523.

It is an arithmetic number, because the mean of its divisors is an integer number (71233675128).

Almost surely, 2^{1131311333111} is an apocalyptic number.

1131311333111 is a deficient number, since it is larger than the sum of its proper divisors (8427468937).

1131311333111 is a wasteful number, since it uses less digits than its factorization.

1131311333111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162.

The product of its digits is 243, while the sum is 23.

Adding to 1131311333111 its reverse (1113331131311), we get a palindrome (2244642464422).

The spelling of 1131311333111 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, three hundred thirty-three thousand, one hundred eleven".