2111311903 has 2 divisors, whose sum is σ = 2111311904. Its totient is φ = 2111311902.

The previous prime is 2111311883. The next prime is 2111311907. The reversal of 2111311903 is 3091131112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111311903 - 2²⁵ = 2077757471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111311907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055655951 + 1055655952.

It is an arithmetic number, because the mean of its divisors is an integer number (1055655952).

Almost surely, 2^2111311903 is an apocalyptic number.

2111311903 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111311903 is an equidigital number, since it uses as much as digits as its factorization.

2111311903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 2111311903 is about 45949.0141678796. The cubic root of 2111311903 is about 1282.8743800737.

The spelling of 2111311903 in words is "two billion, one hundred eleven million, three hundred eleven thousand, nine hundred three".