23101609 has 2 divisors, whose sum is σ = 23101610. Its totient is φ = 23101608.

The previous prime is 23101601. The next prime is 23101613. The reversal of 23101609 is 90610132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 5419584 = 4205^2 + 2328^2 .

It is a cyclic number.

It is not a de Polignac number, because 23101609 - 2³ = 23101601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23101609.

It is not a weakly prime, because it can be changed into another prime (23101601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11550804 + 11550805.

It is an arithmetic number, because the mean of its divisors is an integer number (11550805).

Almost surely, 2^23101609 is an apocalyptic number.

It is an amenable number.

23101609 is a deficient number, since it is larger than the sum of its proper divisors (1).

23101609 is an equidigital number, since it uses as much as digits as its factorization.

23101609 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 22.

The square root of 23101609 is about 4806.4133197219. The cubic root of 23101609 is about 284.8048689950.

The spelling of 23101609 in words is "twenty-three million, one hundred one thousand, six hundred nine".