1131100331287 has 2 divisors, whose sum is σ = 1131100331288. Its totient is φ = 1131100331286.

The previous prime is 1131100331269. The next prime is 1131100331293. The reversal of 1131100331287 is 7821330011311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131100331287 - 2⁷ = 1131100331159 is a prime.

It is a super-2 number, since 2×1131100331287² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131100331297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565550165643 + 565550165644.

It is an arithmetic number, because the mean of its divisors is an integer number (565550165644).

Almost surely, 2^{1131100331287} is an apocalyptic number.

1131100331287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131100331287 is an equidigital number, since it uses as much as digits as its factorization.

1131100331287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

Adding to 1131100331287 its reverse (7821330011311), we get a palindrome (8952430342598).

The spelling of 1131100331287 in words is "one trillion, one hundred thirty-one billion, one hundred million, three hundred thirty-one thousand, two hundred eighty-seven".