23419309 has 4 divisors (see below), whose sum is σ = 23451004. Its totient is φ = 23387616.

The previous prime is 23419289. The next prime is 23419321. The reversal of 23419309 is 90391432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8037225 + 15382084 = 2835^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 23419309 - 2⁹ = 23418797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23419339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14712 + ... + 16225.

It is an arithmetic number, because the mean of its divisors is an integer number (5862751).

Almost surely, 2^23419309 is an apocalyptic number.

It is an amenable number.

23419309 is a deficient number, since it is larger than the sum of its proper divisors (31695).

23419309 is an equidigital number, since it uses as much as digits as its factorization.

23419309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31694.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23419309 is about 4839.3500596671. The cubic root of 23419309 is about 286.1045023753.

The spelling of 23419309 in words is "twenty-three million, four hundred nineteen thousand, three hundred nine".