2131099 has 2 divisors, whose sum is σ = 2131100. Its totient is φ = 2131098.

The previous prime is 2131093. The next prime is 2131109. The reversal of 2131099 is 9901312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2131099 - 2¹¹ = 2129051 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065549 + 1065550.

It is an arithmetic number, because the mean of its divisors is an integer number (1065550).

2^2131099 is an apocalyptic number.

2131099 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131099 is an equidigital number, since it uses as much as digits as its factorization.

2131099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 2131099 is about 1459.8284145748. The cubic root of 2131099 is about 128.6869600584.

The spelling of 2131099 in words is "two million, one hundred thirty-one thousand, ninety-nine".