1131311233271 has 2 divisors, whose sum is σ = 1131311233272. Its totient is φ = 1131311233270.

The previous prime is 1131311233223. The next prime is 1131311233313. The reversal of 1131311233271 is 1723321131311.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131311233271 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131311236271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565655616635 + 565655616636.

It is an arithmetic number, because the mean of its divisors is an integer number (565655616636).

Almost surely, 2^{1131311233271} is an apocalyptic number.

1131311233271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131311233271 is an equidigital number, since it uses as much as digits as its factorization.

1131311233271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

Adding to 1131311233271 its reverse (1723321131311), we get a palindrome (2854632364582).

The spelling of 1131311233271 in words is "one trillion, one hundred thirty-one billion, three hundred eleven million, two hundred thirty-three thousand, two hundred seventy-one".