23122709 has 2 divisors, whose sum is σ = 23122710. Its totient is φ = 23122708.

The previous prime is 23122609. The next prime is 23122727. The reversal of 23122709 is 90722132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22061809 + 1060900 = 4697^2 + 1030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23122709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23122769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561354 + 11561355.

It is an arithmetic number, because the mean of its divisors is an integer number (11561355).

Almost surely, 2^23122709 is an apocalyptic number.

It is an amenable number.

23122709 is a deficient number, since it is larger than the sum of its proper divisors (1).

23122709 is an equidigital number, since it uses as much as digits as its factorization.

23122709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 23122709 is about 4808.6078026805. The cubic root of 23122709 is about 284.8915520495.

The spelling of 23122709 in words is "twenty-three million, one hundred twenty-two thousand, seven hundred nine".