2111311001 has 2 divisors, whose sum is σ = 2111311002. Its totient is φ = 2111311000.

The previous prime is 2111310991. The next prime is 2111311009. The reversal of 2111311001 is 1001131112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111310601 + 400 = 45949^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111311001 - 2¹⁸ = 2111048857 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111311009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055655500 + 1055655501.

It is an arithmetic number, because the mean of its divisors is an integer number (1055655501).

Almost surely, 2^2111311001 is an apocalyptic number.

It is an amenable number.

2111311001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111311001 is an equidigital number, since it uses as much as digits as its factorization.

2111311001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 2111311001 is about 45949.0043526516. The cubic root of 2111311001 is about 1282.8741973827.

Adding to 2111311001 its reverse (1001131112), we get a palindrome (3112442113).

The spelling of 2111311001 in words is "two billion, one hundred eleven million, three hundred eleven thousand, one".