23130409 has 2 divisors, whose sum is σ = 23130410. Its totient is φ = 23130408.

The previous prime is 23130397. The next prime is 23130449. The reversal of 23130409 is 90403132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22992025 + 138384 = 4795^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 23130409 - 2⁵ = 23130377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23130409.

It is not a weakly prime, because it can be changed into another prime (23130449) 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, 11565204 + 11565205.

It is an arithmetic number, because the mean of its divisors is an integer number (11565205).

Almost surely, 2^23130409 is an apocalyptic number.

It is an amenable number.

23130409 is a deficient number, since it is larger than the sum of its proper divisors (1).

23130409 is an equidigital number, since it uses as much as digits as its factorization.

23130409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23130409 is about 4809.4083835748. The cubic root of 23130409 is about 284.9231720685.

The spelling of 23130409 in words is "twenty-three million, one hundred thirty thousand, four hundred nine".