2132111309 has 2 divisors, whose sum is σ = 2132111310. Its totient is φ = 2132111308.

The previous prime is 2132111299. The next prime is 2132111341. The reversal of 2132111309 is 9031112312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2124288100 + 7823209 = 46090^2 + 2797^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132111309 - 2⁸ = 2132111053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132111209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066055654 + 1066055655.

It is an arithmetic number, because the mean of its divisors is an integer number (1066055655).

Almost surely, 2^2132111309 is an apocalyptic number.

It is an amenable number.

2132111309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132111309 is an equidigital number, since it uses as much as digits as its factorization.

2132111309 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2132111309 is about 46174.7908387250. The cubic root of 2132111309 is about 1287.0733301251.

The spelling of 2132111309 in words is "two billion, one hundred thirty-two million, one hundred eleven thousand, three hundred nine".