2101312193 has 2 divisors, whose sum is σ = 2101312194. Its totient is φ = 2101312192.

The previous prime is 2101312151. The next prime is 2101312229. The reversal of 2101312193 is 3912131012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2035182769 + 66129424 = 45113^2 + 8132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101312193 - 2¹⁰ = 2101311169 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101312133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050656096 + 1050656097.

It is an arithmetic number, because the mean of its divisors is an integer number (1050656097).

Almost surely, 2^2101312193 is an apocalyptic number.

It is an amenable number.

2101312193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101312193 is an equidigital number, since it uses as much as digits as its factorization.

2101312193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2101312193 is about 45840.0719131199. The cubic root of 2101312193 is about 1280.8458343753.

The spelling of 2101312193 in words is "two billion, one hundred one million, three hundred twelve thousand, one hundred ninety-three".