1131311011 has 2 divisors, whose sum is σ = 1131311012. Its totient is φ = 1131311010.

The previous prime is 1131310979. The next prime is 1131311029. The reversal of 1131311011 is 1101131311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131311011 - 2⁵ = 1131310979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131310982 and 1131311000.

It is not a weakly prime, because it can be changed into another prime (1131311081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565655505 + 565655506.

It is an arithmetic number, because the mean of its divisors is an integer number (565655506).

Almost surely, 2^1131311011 is an apocalyptic number.

1131311011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131311011 is an equidigital number, since it uses as much as digits as its factorization.

1131311011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1131311011 is about 33634.9670878388. The cubic root of 1131311011 is about 1041.9830908946.

Adding to 1131311011 its reverse (1101131311), we get a palindrome (2232442322).

The spelling of 1131311011 in words is "one billion, one hundred thirty-one million, three hundred eleven thousand, eleven".