2123032309 has 2 divisors, whose sum is σ = 2123032310. Its totient is φ = 2123032308.

The previous prime is 2123032291. The next prime is 2123032321. The reversal of 2123032309 is 9032303212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1984969809 + 138062500 = 44553^2 + 11750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123032309 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123032339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061516154 + 1061516155.

It is an arithmetic number, because the mean of its divisors is an integer number (1061516155).

Almost surely, 2^2123032309 is an apocalyptic number.

It is an amenable number.

2123032309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123032309 is an equidigital number, since it uses as much as digits as its factorization.

2123032309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 2123032309 is about 46076.3747380368. The cubic root of 2123032309 is about 1285.2438502235.

The spelling of 2123032309 in words is "two billion, one hundred twenty-three million, thirty-two thousand, three hundred nine".