2131311011 has 2 divisors, whose sum is σ = 2131311012. Its totient is φ = 2131311010.

The previous prime is 2131311001. The next prime is 2131311067. The reversal of 2131311011 is 1101131312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131311011 - 2¹⁸ = 2131048867 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131311001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065655505 + 1065655506.

It is an arithmetic number, because the mean of its divisors is an integer number (1065655506).

Almost surely, 2^2131311011 is an apocalyptic number.

2131311011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131311011 is an equidigital number, since it uses as much as digits as its factorization.

2131311011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2131311011 is about 46166.1240629967. The cubic root of 2131311011 is about 1286.9122736312.

Adding to 2131311011 its reverse (1101131312), we get a palindrome (3232442323).

The spelling of 2131311011 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, eleven".